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1219680000000 = 21132577112
BaseRepresentation
bin10001101111111010100…
…101111101100000000000
311022121012121002200202100
4101233322211331200000
5124440401040000000
62332151355150400
7154055543641230
oct21577245754000
94277177080670
101219680000000
11430299621400
12178470445400
138b0278b1417
1443066111cc0
1521ad77e6a00
hex11bfa97d800

1219680000000 has 1728 divisors, whose sum is σ = 5531435058240. Its totient is φ = 253440000000.

The previous prime is 1219679999987. The next prime is 1219680000031. The reversal of 1219680000000 is 869121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 110879999995 + ... + 110880000005.

It is an arithmetic number, because the mean of its divisors is an integer number (3201061955).

Almost surely, 21219680000000 is an apocalyptic number.

1219680000000 is a gapful number since it is divisible by the number (10) 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 1219680000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2765717529120).

1219680000000 is an abundant number, since it is smaller than the sum of its proper divisors (4311755058240).

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

1219680000000 is an frugal number, since it uses more digits than its factorization.

1219680000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 28 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

Adding to 1219680000000 its reverse (869121), we get a palindrome (1219680869121).

The spelling of 1219680000000 in words is "one trillion, two hundred nineteen billion, six hundred eighty million", and thus it is an aban number.