20626367542477 has 16 divisors (see below), whose sum is σ = 21016615334400. Its totient is φ = 20239730932032.

The previous prime is 20626367542393. The next prime is 20626367542483. The reversal of 20626367542477 is 77424576362602.

It is a de Polignac number, because none of the positive numbers 2^k-20626367542477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20626367548477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13595524 + ... + 15036322.

It is an arithmetic number, because the mean of its divisors is an integer number (1313538458400).

Almost surely, 2^{20626367542477} is an apocalyptic number.

It is an amenable number.

20626367542477 is a deficient number, since it is larger than the sum of its proper divisors (390247791923).

20626367542477 is a wasteful number, since it uses less digits than its factorization.

20626367542477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442052.

The product of its (nonzero) digits is 142248960, while the sum is 61.

The spelling of 20626367542477 in words is "twenty trillion, six hundred twenty-six billion, three hundred sixty-seven million, five hundred forty-two thousand, four hundred seventy-seven".