2638764126764 has 48 divisors (see below), whose sum is σ = 4896057626880. Its totient is φ = 1242204698880.

The previous prime is 2638764126637. The next prime is 2638764126787. The reversal of 2638764126764 is 4676214678362.

It is a happy number.

It is a super-2 number, since 2×2638764126764² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 2638764126697 and 2638764126706.

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, 82370702 + ... + 82402730.

It is an arithmetic number, because the mean of its divisors is an integer number (102001200560).

Almost surely, 2^{2638764126764} is an apocalyptic number.

It is an amenable number.

2638764126764 is a deficient number, since it is larger than the sum of its proper divisors (2257293500116).

2638764126764 is a wasteful number, since it uses less digits than its factorization.

2638764126764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50058 (or 50056 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 62.

The spelling of 2638764126764 in words is "two trillion, six hundred thirty-eight billion, seven hundred sixty-four million, one hundred twenty-six thousand, seven hundred sixty-four".