20757057089415 has 16 divisors (see below), whose sum is σ = 33212776581600. Its totient is φ = 11069935368192.

The previous prime is 20757057089407. The next prime is 20757057089491. The reversal of 20757057089415 is 51498075075702.

It is not a de Polignac number, because 20757057089415 - 2³ = 20757057089407 is a prime.

It is a super-2 number, since 2×20757057089415² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30595750 + ... + 31266819.

It is an arithmetic number, because the mean of its divisors is an integer number (2075798536350).

Almost surely, 2^{20757057089415} is an apocalyptic number.

20757057089415 is a deficient number, since it is larger than the sum of its proper divisors (12455719492185).

20757057089415 is a wasteful number, since it uses less digits than its factorization.

20757057089415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61884946.

The product of its (nonzero) digits is 24696000, while the sum is 60.

The spelling of 20757057089415 in words is "twenty trillion, seven hundred fifty-seven billion, fifty-seven million, eighty-nine thousand, four hundred fifteen".