20360510641564 has 12 divisors (see below), whose sum is σ = 35757693957888. Its totient is φ = 10144026653600.

The previous prime is 20360510641547. The next prime is 20360510641609. The reversal of 20360510641564 is 46514601506302.

It is a self number, because there is not a number n which added to its sum of digits gives 20360510641564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9057165532 + ... + 9057167779.

It is an arithmetic number, because the mean of its divisors is an integer number (2979807829824).

Almost surely, 2^{20360510641564} is an apocalyptic number.

It is an amenable number.

20360510641564 is a deficient number, since it is larger than the sum of its proper divisors (15397183316324).

20360510641564 is a wasteful number, since it uses less digits than its factorization.

20360510641564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18114333596 (or 18114333594 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 20360510641564 in words is "twenty trillion, three hundred sixty billion, five hundred ten million, six hundred forty-one thousand, five hundred sixty-four".