10640307638 has 16 divisors (see below), whose sum is σ = 16007749440. Its totient is φ = 5304410496.

The previous prime is 10640307637. The next prime is 10640307683. The reversal of 10640307638 is 83670304601.

It is a super-2 number, since 2×10640307638² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640307631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374956 + ... + 1382672.

It is an arithmetic number, because the mean of its divisors is an integer number (1000484340).

Almost surely, 2^10640307638 is an apocalyptic number.

10640307638 is a deficient number, since it is larger than the sum of its proper divisors (5367441802).

10640307638 is a wasteful number, since it uses less digits than its factorization.

10640307638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9671.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 10640307638 in words is "ten billion, six hundred forty million, three hundred seven thousand, six hundred thirty-eight".