20413502514251 has 16 divisors (see below), whose sum is σ = 25460554087680. Its totient is φ = 15900404366880.

The previous prime is 20413502514217. The next prime is 20413502514277. The reversal of 20413502514251 is 15241520531402.

It is not a de Polignac number, because 20413502514251 - 2³⁸ = 20138624607307 is a prime.

It is a super-2 number, since 2×20413502514251² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413502510251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51643241 + ... + 52037018.

It is an arithmetic number, because the mean of its divisors is an integer number (1591284630480).

Almost surely, 2^{20413502514251} is an apocalyptic number.

20413502514251 is a deficient number, since it is larger than the sum of its proper divisors (5047051573429).

20413502514251 is a wasteful number, since it uses less digits than its factorization.

20413502514251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103682834.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 20413502514251 in words is "twenty trillion, four hundred thirteen billion, five hundred two million, five hundred fourteen thousand, two hundred fifty-one".