100605561104 has 20 divisors (see below), whose sum is σ = 194972117340. Its totient is φ = 50290176000.

The previous prime is 100605561079. The next prime is 100605561169. The reversal of 100605561104 is 401165506001.

It can be written as a sum of positive squares in 2 ways, for example, as 4227600400 + 96377960704 = 65020^2 + 310448^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721769 + ... + 849800.

It is an arithmetic number, because the mean of its divisors is an integer number (9748605867).

Almost surely, 2^100605561104 is an apocalyptic number.

It is an amenable number.

100605561104 is a deficient number, since it is larger than the sum of its proper divisors (94366556236).

100605561104 is a wasteful number, since it uses less digits than its factorization.

100605561104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575578 (or 1575572 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 100605561104 in words is "one hundred billion, six hundred five million, five hundred sixty-one thousand, one hundred four".