20965364057267 has 16 divisors (see below), whose sum is σ = 25799849809920. Its totient is φ = 16626569866368.

The previous prime is 20965364057257. The next prime is 20965364057303. The reversal of 20965364057267 is 76275046356902.

It is not a de Polignac number, because 20965364057267 - 2¹² = 20965364053171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20965364057257) 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 15 ways as a sum of consecutive naturals, for example, 1493039843 + ... + 1493053884.

It is an arithmetic number, because the mean of its divisors is an integer number (1612490613120).

Almost surely, 2^{20965364057267} is an apocalyptic number.

20965364057267 is a deficient number, since it is larger than the sum of its proper divisors (4834485752653).

20965364057267 is a wasteful number, since it uses less digits than its factorization.

20965364057267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986093810.

The product of its (nonzero) digits is 114307200, while the sum is 62.

The spelling of 20965364057267 in words is "twenty trillion, nine hundred sixty-five billion, three hundred sixty-four million, fifty-seven thousand, two hundred sixty-seven".