20507366660 has 24 divisors (see below), whose sum is σ = 46980513216. Its totient is φ = 7457224160.

The previous prime is 20507366609. The next prime is 20507366669. The reversal of 20507366660 is 6666370502.

It is not an unprimeable number, because it can be changed into a prime (20507366669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46607432 + ... + 46607871.

It is an arithmetic number, because the mean of its divisors is an integer number (1957521384).

Almost surely, 2^20507366660 is an apocalyptic number.

20507366660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20507366660 is an abundant number, since it is smaller than the sum of its proper divisors (26473146556).

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

20507366660 is a wasteful number, since it uses less digits than its factorization.

20507366660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93215323 (or 93215321 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 20507366660 in words is "twenty billion, five hundred seven million, three hundred sixty-six thousand, six hundred sixty".