10406644565613 has 4 divisors (see below), whose sum is σ = 13875526087488. Its totient is φ = 6937763043740.

The previous prime is 10406644565599. The next prime is 10406644565617. The reversal of 10406644565613 is 31656544660401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10406644565613 - 2³⁸ = 10131766658669 is a prime.

It is a super-2 number, since 2×10406644565613² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10406644565617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734440760933 + ... + 1734440760938.

It is an arithmetic number, because the mean of its divisors is an integer number (3468881521872).

Almost surely, 2^{10406644565613} is an apocalyptic number.

It is an amenable number.

10406644565613 is a deficient number, since it is larger than the sum of its proper divisors (3468881521875).

10406644565613 is an equidigital number, since it uses as much as digits as its factorization.

10406644565613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468881521874.

The product of its (nonzero) digits is 6220800, while the sum is 51.

The spelling of 10406644565613 in words is "ten trillion, four hundred six billion, six hundred forty-four million, five hundred sixty-five thousand, six hundred thirteen".