20637276705357 has 32 divisors (see below), whose sum is σ = 30264157163520. Its totient is φ = 12429383801280.

The previous prime is 20637276705349. The next prime is 20637276705373. The reversal of 20637276705357 is 75350767273602.

It is not a de Polignac number, because 20637276705357 - 2³ = 20637276705349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20637276705357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20637276700357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113538694 + ... + 113720312.

It is an arithmetic number, because the mean of its divisors is an integer number (945754911360).

Almost surely, 2^{20637276705357} is an apocalyptic number.

It is an amenable number.

20637276705357 is a deficient number, since it is larger than the sum of its proper divisors (9626880458163).

20637276705357 is a wasteful number, since it uses less digits than its factorization.

20637276705357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243673.

The product of its (nonzero) digits is 77792400, while the sum is 60.

The spelling of 20637276705357 in words is "twenty trillion, six hundred thirty-seven billion, two hundred seventy-six million, seven hundred five thousand, three hundred fifty-seven".