3156556512 has 96 divisors (see below), whose sum is σ = 8373383424. Its totient is φ = 1041152000.

The previous prime is 3156556489. The next prime is 3156556517. The reversal of 3156556512 is 2156556513.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×3156556512² = 19927698026899212288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3156556517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6428587 + ... + 6429077.

It is an arithmetic number, because the mean of its divisors is an integer number (87222744).

Almost surely, 2^3156556512 is an apocalyptic number.

3156556512 is a gapful number since it is divisible by the number (32) 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 3156556512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4186691712).

3156556512 is an abundant number, since it is smaller than the sum of its proper divisors (5216826912).

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

3156556512 is a wasteful number, since it uses less digits than its factorization.

3156556512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1064 counting only the distinct ones).

The product of its digits is 135000, while the sum is 39.

The square root of 3156556512 is about 56183.2404903811. The cubic root of 3156556512 is about 1466.9135593550.

Subtracting from 3156556512 its reverse (2156556513), we obtain a palindrome (999999999).

The spelling of 3156556512 in words is "three billion, one hundred fifty-six million, five hundred fifty-six thousand, five hundred twelve".