20006958965 has 12 divisors (see below), whose sum is σ = 27928081836. Its totient is φ = 13719057408.

The previous prime is 20006958953. The next prime is 20006959039. The reversal of 20006958965 is 56985960002.

It can be written as a sum of positive squares in 2 ways, for example, as 4688688676 + 15318270289 = 68474^2 + 123767^2 .

It is not a de Polignac number, because 20006958965 - 2⁴ = 20006958949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40830284 + ... + 40830773.

It is an arithmetic number, because the mean of its divisors is an integer number (2327340153).

Almost surely, 2^20006958965 is an apocalyptic number.

It is an amenable number.

20006958965 is a deficient number, since it is larger than the sum of its proper divisors (7921122871).

20006958965 is an equidigital number, since it uses as much as digits as its factorization.

20006958965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81661076 (or 81661069 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 20006958965 in words is "twenty billion, six million, nine hundred fifty-eight thousand, nine hundred sixty-five".