100536661944 has 64 divisors (see below), whose sum is σ = 279310989600. Its totient is φ = 33507122688.

The previous prime is 100536661943. The next prime is 100536661993. The reversal of 100536661944 is 449166635001.

It is a self number, because there is not a number n which added to its sum of digits gives 100536661944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100536661943) 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, 1552192 + ... + 1615664.

Almost surely, 2^100536661944 is an apocalyptic number.

It is an amenable number.

100536661944 is an abundant number, since it is smaller than the sum of its proper divisors (178774327656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100536661944 is a wasteful number, since it uses less digits than its factorization.

100536661944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70821 (or 70811 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 100536661944 in words is "one hundred billion, five hundred thirty-six million, six hundred sixty-one thousand, nine hundred forty-four".