2151024320513 has 4 divisors (see below), whose sum is σ = 2166725228100. Its totient is φ = 2135323412928.

The previous prime is 2151024320453. The next prime is 2151024320563. The reversal of 2151024320513 is 3150234201512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1464930177649 + 686094142864 = 1210343^2 + 828308^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151024320513 - 2³² = 2146729353217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151024320563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7850453588 + ... + 7850453861.

It is an arithmetic number, because the mean of its divisors is an integer number (541681307025).

Almost surely, 2^{2151024320513} is an apocalyptic number.

It is an amenable number.

2151024320513 is a deficient number, since it is larger than the sum of its proper divisors (15700907587).

2151024320513 is a wasteful number, since it uses less digits than its factorization.

2151024320513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15700907586.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 2151024320513 in words is "two trillion, one hundred fifty-one billion, twenty-four million, three hundred twenty thousand, five hundred thirteen".