20057406965 has 8 divisors (see below), whose sum is σ = 24122496600. Its totient is φ = 16010186752.

The previous prime is 20057406931. The next prime is 20057406977. The reversal of 20057406965 is 56960475002.

It can be written as a sum of positive squares in 4 ways, for example, as 5835890449 + 14221516516 = 76393^2 + 119254^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20057406965 - 2¹⁴ = 20057390581 is a prime.

It is a super-2 number, since 2×20057406965² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4464884 + ... + 4469373.

It is an arithmetic number, because the mean of its divisors is an integer number (3015312075).

Almost surely, 2^20057406965 is an apocalyptic number.

It is an amenable number.

20057406965 is a deficient number, since it is larger than the sum of its proper divisors (4065089635).

20057406965 is an equidigital number, since it uses as much as digits as its factorization.

20057406965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8934711.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 20057406965 in words is "twenty billion, fifty-seven million, four hundred six thousand, nine hundred sixty-five".