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213000000000000 = 212351271
BaseRepresentation
bin110000011011100011101101…
…010101100101000000000000
31000221011121020020010120211220
4300123203231111211000000
5210404243000000000000
62033002503230035040
762602512364146213
oct6033435525450000
91027147206116756
10213000000000000
116196087a113044
121ba809b1048a80
1391b0a76c472a5
143a8537da4977a
1519959437261a0
hexc1b8ed565000

213000000000000 has 676 divisors, whose sum is σ = 719912108785248. Its totient is φ = 56000000000000.

The previous prime is 212999999999993. The next prime is 213000000000031. The reversal of 213000000000000 is 312.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 51 ways as a sum of consecutive naturals, for example, 2999999999965 + ... + 3000000000035.

Almost surely, 2213000000000000 is an apocalyptic number.

213000000000000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213000000000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359956054392624).

213000000000000 is an abundant number, since it is smaller than the sum of its proper divisors (506912108785248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213000000000000 is an frugal number, since it uses more digits than its factorization.

213000000000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 6.

Adding to 213000000000000 its reverse (312), we get a palindrome (213000000000312).

The spelling of 213000000000000 in words is "two hundred thirteen trillion", and thus it is an aban number.