100720136523 has 16 divisors (see below), whose sum is σ = 143150988800. Its totient is φ = 62807490720.

The previous prime is 100720136501. The next prime is 100720136527. The reversal of 100720136523 is 325631027001.

It is not a de Polignac number, because 100720136523 - 2⁶ = 100720136459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100720136527) 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, 11179168 + ... + 11188173.

It is an arithmetic number, because the mean of its divisors is an integer number (8946936800).

Almost surely, 2^100720136523 is an apocalyptic number.

100720136523 is a deficient number, since it is larger than the sum of its proper divisors (42430852277).

100720136523 is a wasteful number, since it uses less digits than its factorization.

100720136523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22367442.

The product of its (nonzero) digits is 7560, while the sum is 30.

The spelling of 100720136523 in words is "one hundred billion, seven hundred twenty million, one hundred thirty-six thousand, five hundred twenty-three".