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20102010000 = 243546773137
BaseRepresentation
bin10010101110001011…
…000101010010010000
31220212221110220122220
4102232023011102100
5312132103310000
613122411501040
71311101160102
oct225613052220
956787426586
1020102010000
118586073706
123a90157780
131b84873297
14d89a7b572
157c9bbb1a0
hex4ae2c5490

20102010000 has 400 divisors, whose sum is σ = 67250023104. Its totient is φ = 5170176000.

The previous prime is 20102009981. The next prime is 20102010001. The reversal of 20102010000 is 1020102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (400).

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 not an unprimeable number, because it can be changed into a prime (20102010001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 146729932 + ... + 146730068.

Almost surely, 220102010000 is an apocalyptic number.

20102010000 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 20102010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33625011552).

20102010000 is an abundant number, since it is smaller than the sum of its proper divisors (47148013104).

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

20102010000 is a wasteful number, since it uses less digits than its factorization.

20102010000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 20102010000 its reverse (1020102), we get a palindrome (20103030102).

The spelling of 20102010000 in words is "twenty billion, one hundred two million, ten thousand".