10399057665 has 16 divisors (see below), whose sum is σ = 16665649728. Its totient is φ = 5537111616.

The previous prime is 10399057661. The next prime is 10399057679. The reversal of 10399057665 is 56675099301.

It is not a de Polignac number, because 10399057665 - 2² = 10399057661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10399057661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556279 + ... + 574668.

It is an arithmetic number, because the mean of its divisors is an integer number (1041603108).

Almost surely, 2^10399057665 is an apocalyptic number.

10399057665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10399057665 is a deficient number, since it is larger than the sum of its proper divisors (6266592063).

10399057665 is a wasteful number, since it uses less digits than its factorization.

10399057665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131568.

The product of its (nonzero) digits is 1530900, while the sum is 51.

The spelling of 10399057665 in words is "ten billion, three hundred ninety-nine million, fifty-seven thousand, six hundred sixty-five".