20654583965 has 16 divisors (see below), whose sum is σ = 25039264320. Its totient is φ = 16354765440.

The previous prime is 20654583871. The next prime is 20654583997. The reversal of 20654583965 is 56938545602.

It is not a de Polignac number, because 20654583965 - 2⁸ = 20654583709 is a prime.

It is a super-2 number, since 2×20654583965² (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 15 ways as a sum of consecutive naturals, for example, 610001 + ... + 642969.

It is an arithmetic number, because the mean of its divisors is an integer number (1564954020).

Almost surely, 2^20654583965 is an apocalyptic number.

It is an amenable number.

20654583965 is a deficient number, since it is larger than the sum of its proper divisors (4384680355).

20654583965 is a wasteful number, since it uses less digits than its factorization.

20654583965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34252.

The product of its (nonzero) digits is 7776000, while the sum is 53.

The spelling of 20654583965 in words is "twenty billion, six hundred fifty-four million, five hundred eighty-three thousand, nine hundred sixty-five".