100645641575 has 24 divisors (see below), whose sum is σ = 128382049392. Its totient is φ = 78212977920.

The previous prime is 100645641541. The next prime is 100645641599. The reversal of 100645641575 is 575146546001.

It is a happy number.

It is not a de Polignac number, because 100645641575 - 2⁸ = 100645641319 is a prime.

It is a Duffinian number.

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, 482552 + ... + 658898.

It is an arithmetic number, because the mean of its divisors is an integer number (5349252058).

Almost surely, 2^100645641575 is an apocalyptic number.

100645641575 is a deficient number, since it is larger than the sum of its proper divisors (27736407817).

100645641575 is a wasteful number, since it uses less digits than its factorization.

100645641575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177011 (or 177006 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 100645641575 in words is "one hundred billion, six hundred forty-five million, six hundred forty-one thousand, five hundred seventy-five".