2156073252912 has 120 divisors (see below), whose sum is σ = 6338617740000. Its totient is φ = 682829773824.

The previous prime is 2156073252911. The next prime is 2156073252967. The reversal of 2156073252912 is 2192523706512.

2156073252912 is a `hidden beast` number, since 2 + 1 + 5 + 607 + 3 + 2 + 5 + 29 + 12 = 666.

It is not an unprimeable number, because it can be changed into a prime (2156073252911) 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, 1691037 + ... + 2678012.

It is an arithmetic number, because the mean of its divisors is an integer number (52821814500).

Almost surely, 2^{2156073252912} is an apocalyptic number.

It is an amenable number.

2156073252912 is an abundant number, since it is smaller than the sum of its proper divisors (4182544487088).

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

2156073252912 is a wasteful number, since it uses less digits than its factorization.

2156073252912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4369235 (or 4369226 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 45.

Adding to 2156073252912 its product of nonzero digits (453600), we get a palindrome (2156073706512).

The spelling of 2156073252912 in words is "two trillion, one hundred fifty-six billion, seventy-three million, two hundred fifty-two thousand, nine hundred twelve".