20612311242688 has 56 divisors (see below), whose sum is σ = 44786846844720. Its totient is φ = 9334402437120.

The previous prime is 20612311242667. The next prime is 20612311242689. The reversal of 20612311242688 is 88624211321602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20612311242689) 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, 54232281 + ... + 54611032.

Almost surely, 2^{20612311242688} is an apocalyptic number.

It is an amenable number.

20612311242688 is an abundant number, since it is smaller than the sum of its proper divisors (24174535602032).

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

20612311242688 is a wasteful number, since it uses less digits than its factorization.

20612311242688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108843605 (or 108843595 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 20612311242688 in words is "twenty trillion, six hundred twelve billion, three hundred eleven million, two hundred forty-two thousand, six hundred eighty-eight".