20652694965 has 48 divisors (see below), whose sum is σ = 42017758848. Its totient is φ = 9186058368.

The previous prime is 20652694949. The next prime is 20652694967. The reversal of 20652694965 is 56949625602.

20652694965 is a `hidden beast` number, since 20 + 6 + 526 + 9 + 4 + 96 + 5 = 666.

It is not a de Polignac number, because 20652694965 - 2⁴ = 20652694949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20652694967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 874347 + ... + 897656.

It is an arithmetic number, because the mean of its divisors is an integer number (875369976).

Almost surely, 2^20652694965 is an apocalyptic number.

It is an amenable number.

20652694965 is an abundant number, since it is smaller than the sum of its proper divisors (21365063883).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20652694965 is a wasteful number, since it uses less digits than its factorization.

20652694965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772058 (or 1772055 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 20652694965 in words is "twenty billion, six hundred fifty-two million, six hundred ninety-four thousand, nine hundred sixty-five".