20413323354015 has 24 divisors (see below), whose sum is σ = 37245361910640. Its totient is φ = 10314100220544.

The previous prime is 20413323353987. The next prime is 20413323354097. The reversal of 20413323354015 is 51045332331402.

20413323354015 is a `hidden beast` number, since 2 + 0 + 4 + 13 + 3 + 233 + 5 + 401 + 5 = 666.

It is not a de Polignac number, because 20413323354015 - 2⁷ = 20413323353887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11937615142 + ... + 11937616851.

It is an arithmetic number, because the mean of its divisors is an integer number (1551890079610).

Almost surely, 2^{20413323354015} is an apocalyptic number.

20413323354015 is a deficient number, since it is larger than the sum of its proper divisors (16832038556625).

20413323354015 is a wasteful number, since it uses less digits than its factorization.

20413323354015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23875232023 (or 23875232020 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 20413323354015 its reverse (51045332331402), we get a palindrome (71458655685417).

The spelling of 20413323354015 in words is "twenty trillion, four hundred thirteen billion, three hundred twenty-three million, three hundred fifty-four thousand, fifteen".