2791857364156 has 48 divisors (see below), whose sum is σ = 5628182757120. Its totient is φ = 1186987426560.

The previous prime is 2791857364069. The next prime is 2791857364159. The reversal of 2791857364156 is 6514637581972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791857364159) 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, 11207251 + ... + 11453653.

It is an arithmetic number, because the mean of its divisors is an integer number (117253807440).

Almost surely, 2^{2791857364156} is an apocalyptic number.

It is an amenable number.

2791857364156 is an abundant number, since it is smaller than the sum of its proper divisors (2836325392964).

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

2791857364156 is a wasteful number, since it uses less digits than its factorization.

2791857364156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249634 (or 249632 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 64.

The spelling of 2791857364156 in words is "two trillion, seven hundred ninety-one billion, eight hundred fifty-seven million, three hundred sixty-four thousand, one hundred fifty-six".