20657307314620 has 24 divisors (see below), whose sum is σ = 43528401159264. Its totient is φ = 8234721821376.

The previous prime is 20657307314603. The next prime is 20657307314659. The reversal of 20657307314620 is 2641370375602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1762563024 + ... + 1762574743.

It is an arithmetic number, because the mean of its divisors is an integer number (1813683381636).

Almost surely, 2^{20657307314620} is an apocalyptic number.

20657307314620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20657307314620 is an abundant number, since it is smaller than the sum of its proper divisors (22871093844644).

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

20657307314620 is a wasteful number, since it uses less digits than its factorization.

20657307314620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525138069 (or 3525138067 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 20657307314620 in words is "twenty trillion, six hundred fifty-seven billion, three hundred seven million, three hundred fourteen thousand, six hundred twenty".