20413515642651 has 16 divisors (see below), whose sum is σ = 32021201008800. Its totient is φ = 12808480402944.

The previous prime is 20413515642623. The next prime is 20413515642683. The reversal of 20413515642651 is 15624651531402.

20413515642651 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 3 + 515 + 64 + 26 + 51 = 666.

It is not a de Polignac number, because 20413515642651 - 2⁷ = 20413515642523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20413515642597 and 20413515642606.

It is not an unprimeable number, because it can be changed into a prime (20413515642601) 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, 22236944686 + ... + 22236945603.

It is an arithmetic number, because the mean of its divisors is an integer number (2001325063050).

Almost surely, 2^{20413515642651} is an apocalyptic number.

20413515642651 is a deficient number, since it is larger than the sum of its proper divisors (11607685366149).

20413515642651 is a wasteful number, since it uses less digits than its factorization.

20413515642651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44473890315 (or 44473890309 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 20413515642651 in words is "twenty trillion, four hundred thirteen billion, five hundred fifteen million, six hundred forty-two thousand, six hundred fifty-one".