10640646047 has 4 divisors (see below), whose sum is σ = 10820996040. Its totient is φ = 10460296056.

The previous prime is 10640646043. The next prime is 10640646059. The reversal of 10640646047 is 74064604601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10640646047 - 2² = 10640646043 is a prime.

It is a super-2 number, since 2×10640646047² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10640646047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10640646043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90174908 + ... + 90175025.

It is an arithmetic number, because the mean of its divisors is an integer number (2705249010).

Almost surely, 2^10640646047 is an apocalyptic number.

10640646047 is a deficient number, since it is larger than the sum of its proper divisors (180349993).

10640646047 is an equidigital number, since it uses as much as digits as its factorization.

10640646047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180349992.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 10640646047 in words is "ten billion, six hundred forty million, six hundred forty-six thousand, forty-seven".