20413123115 has 32 divisors (see below), whose sum is σ = 30549588480. Its totient is φ = 12721132800.

The previous prime is 20413123103. The next prime is 20413123117. The reversal of 20413123115 is 51132131402.

It is not a de Polignac number, because 20413123115 - 2³⁴ = 3233253931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20413123117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1703816 + ... + 1715754.

It is an arithmetic number, because the mean of its divisors is an integer number (954674640).

Almost surely, 2^20413123115 is an apocalyptic number.

20413123115 is a deficient number, since it is larger than the sum of its proper divisors (10136465365).

20413123115 is a wasteful number, since it uses less digits than its factorization.

20413123115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16403.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 20413123115 its reverse (51132131402), we get a palindrome (71545254517).

The spelling of 20413123115 in words is "twenty billion, four hundred thirteen million, one hundred twenty-three thousand, one hundred fifteen".