2157265938792 has 192 divisors, whose sum is σ = 6068365992000. Its totient is φ = 636529259520.

The previous prime is 2157265938791. The next prime is 2157265938827. The reversal of 2157265938792 is 2978395627512.

It is not an unprimeable number, because it can be changed into a prime (2157265938791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12623388 + ... + 12793140.

It is an arithmetic number, because the mean of its divisors is an integer number (31606072875).

Almost surely, 2^{2157265938792} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157265938792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3034182996000).

2157265938792 is an abundant number, since it is smaller than the sum of its proper divisors (3911100053208).

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

2157265938792 is a wasteful number, since it uses less digits than its factorization.

2157265938792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169872 (or 169837 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 66.

The spelling of 2157265938792 in words is "two trillion, one hundred fifty-seven billion, two hundred sixty-five million, nine hundred thirty-eight thousand, seven hundred ninety-two".