10640506631 has 4 divisors (see below), whose sum is σ = 10640745264. Its totient is φ = 10640268000.

The previous prime is 10640506589. The next prime is 10640506633. The reversal of 10640506631 is 13660504601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13660504601 = 31643 ⋅431707.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10640506631 is a prime.

It is a super-2 number, since 2×10640506631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640506633) 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 3 ways as a sum of consecutive naturals, for example, 30290 + ... + 148991.

It is an arithmetic number, because the mean of its divisors is an integer number (2660186316).

Almost surely, 2^10640506631 is an apocalyptic number.

10640506631 is a deficient number, since it is larger than the sum of its proper divisors (238633).

10640506631 is an equidigital number, since it uses as much as digits as its factorization.

10640506631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238632.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 10640506631 in words is "ten billion, six hundred forty million, five hundred six thousand, six hundred thirty-one".