20138796015 has 32 divisors (see below), whose sum is σ = 35218638336. Its totient is φ = 9766500480.

The previous prime is 20138795993. The next prime is 20138796043. The reversal of 20138796015 is 51069783102.

It is not a de Polignac number, because 20138796015 - 2⁵ = 20138795983 is a prime.

It is a super-2 number, since 2×20138796015² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 757651 + ... + 783780.

It is an arithmetic number, because the mean of its divisors is an integer number (1100582448).

Almost surely, 2^20138796015 is an apocalyptic number.

20138796015 is a deficient number, since it is larger than the sum of its proper divisors (15079842321).

20138796015 is a wasteful number, since it uses less digits than its factorization.

20138796015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1541519.

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 20138796015 in words is "twenty billion, one hundred thirty-eight million, seven hundred ninety-six thousand, fifteen".