2638916525129 has 16 divisors (see below), whose sum is σ = 2704925966400. Its totient is φ = 2573640225024.

The previous prime is 2638916525107. The next prime is 2638916525159. The reversal of 2638916525129 is 9215256198362.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2638916525129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2638916525159) 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, 12904094 + ... + 13107000.

It is an arithmetic number, because the mean of its divisors is an integer number (169057872900).

Almost surely, 2^{2638916525129} is an apocalyptic number.

It is an amenable number.

2638916525129 is a deficient number, since it is larger than the sum of its proper divisors (66009441271).

2638916525129 is a wasteful number, since it uses less digits than its factorization.

2638916525129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204712.

The product of its digits is 13996800, while the sum is 59.

The spelling of 2638916525129 in words is "two trillion, six hundred thirty-eight billion, nine hundred sixteen million, five hundred twenty-five thousand, one hundred twenty-nine".