2131297012565 has 16 divisors (see below), whose sum is σ = 2994212390400. Its totient is φ = 1425815422080.

The previous prime is 2131297012549. The next prime is 2131297012573. The reversal of 2131297012565 is 5652107921312.

It is not a de Polignac number, because 2131297012565 - 2⁴ = 2131297012549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742610765 + ... + 742613634.

It is an arithmetic number, because the mean of its divisors is an integer number (187138274400).

Almost surely, 2^{2131297012565} is an apocalyptic number.

It is an amenable number.

2131297012565 is a deficient number, since it is larger than the sum of its proper divisors (862915377835).

2131297012565 is a wasteful number, since it uses less digits than its factorization.

2131297012565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485224452.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 2131297012565 in words is "two trillion, one hundred thirty-one billion, two hundred ninety-seven million, twelve thousand, five hundred sixty-five".