100015020541521 has 12 divisors (see below), whose sum is σ = 144520106502772. Its totient is φ = 66651773105376.

The previous prime is 100015020541489. The next prime is 100015020541529. The reversal of 100015020541521 is 125145020510001.

It is a happy number.

100015020541521 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 1 + 50 + 20 + 541 + 52 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26773328747025 + 73241691794496 = 5174295^2 + 8558136^2 .

It is not a de Polignac number, because 100015020541521 - 2⁵ = 100015020541489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100015020541529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2075579206 + ... + 2075627391.

Almost surely, 2^{100015020541521} is an apocalyptic number.

It is an amenable number.

100015020541521 is a deficient number, since it is larger than the sum of its proper divisors (44505085961251).

100015020541521 is a wasteful number, since it uses less digits than its factorization.

100015020541521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151209280 (or 4151209277 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The spelling of 100015020541521 in words is "one hundred trillion, fifteen billion, twenty million, five hundred forty-one thousand, five hundred twenty-one".