10638664085 has 16 divisors (see below), whose sum is σ = 14900599296. Its totient is φ = 7139868288.

The previous prime is 10638664067. The next prime is 10638664147. The reversal of 10638664085 is 58046683601.

It is not a de Polignac number, because 10638664085 - 2²⁰ = 10637615509 is a prime.

It is a super-2 number, since 2×10638664085² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

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, 3231992 + ... + 3235281.

It is an arithmetic number, because the mean of its divisors is an integer number (931287456).

Almost surely, 2^10638664085 is an apocalyptic number.

It is an amenable number.

10638664085 is a deficient number, since it is larger than the sum of its proper divisors (4261935211).

10638664085 is an equidigital number, since it uses as much as digits as its factorization.

10638664085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6467332.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 10638664085 in words is "ten billion, six hundred thirty-eight million, six hundred sixty-four thousand, eighty-five".