20307560686 has 12 divisors (see below), whose sum is σ = 35434621368. Its totient is φ = 8703240252.

The previous prime is 20307560641. The next prime is 20307560723. The reversal of 20307560686 is 68606570302.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 103609906 + ... + 103610101.

It is an arithmetic number, because the mean of its divisors is an integer number (2952885114).

Almost surely, 2^20307560686 is an apocalyptic number.

20307560686 is a deficient number, since it is larger than the sum of its proper divisors (15127060682).

20307560686 is a wasteful number, since it uses less digits than its factorization.

20307560686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207220023 (or 207220016 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 20307560686 in words is "twenty billion, three hundred seven million, five hundred sixty thousand, six hundred eighty-six".