3123206556156 has 72 divisors (see below), whose sum is σ = 7912675212624. Its totient is φ = 1038710449920.

The previous prime is 3123206556103. The next prime is 3123206556157. The reversal of 3123206556156 is 6516556023213.

3123206556156 is a `hidden beast` number, since 3 + 1 + 2 + 3 + 20 + 6 + 5 + 5 + 615 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123206556157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31219336 + ... + 31319216.

It is an arithmetic number, because the mean of its divisors is an integer number (109898266842).

Almost surely, 2^{3123206556156} is an apocalyptic number.

3123206556156 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3123206556156 is an abundant number, since it is smaller than the sum of its proper divisors (4789468656468).

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

3123206556156 is a wasteful number, since it uses less digits than its factorization.

3123206556156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101851 (or 101846 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 3123206556156 in words is "three trillion, one hundred twenty-three billion, two hundred six million, five hundred fifty-six thousand, one hundred fifty-six".