20345015163213 has 16 divisors (see below), whose sum is σ = 32459283451840. Its totient is φ = 12520009330992.

The previous prime is 20345015163133. The next prime is 20345015163293. The reversal of 20345015163213 is 31236151054302.

20345015163213 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 5 + 0 + 1 + 5 + 1 + 632 + 13 = 666.

It is an interprime number because it is at equal distance from previous prime (20345015163133) and next prime (20345015163293).

It is not a de Polignac number, because 20345015163213 - 2²⁶ = 20344948054349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345015163293) 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, 28981502731 + ... + 28981503432.

It is an arithmetic number, because the mean of its divisors is an integer number (2028705215740).

Almost surely, 2^{20345015163213} is an apocalyptic number.

It is an amenable number.

20345015163213 is a deficient number, since it is larger than the sum of its proper divisors (12114268288627).

20345015163213 is a wasteful number, since it uses less digits than its factorization.

20345015163213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57963006185 (or 57963006179 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 20345015163213 in words is "twenty trillion, three hundred forty-five billion, fifteen million, one hundred sixty-three thousand, two hundred thirteen".