100919074644 has 54 divisors (see below), whose sum is σ = 255505045614. Its totient is φ = 33586462080.

The previous prime is 100919074631. The next prime is 100919074661. The reversal of 100919074644 is 446470919001.

100919074644 is a `hidden beast` number, since 10 + 0 + 91 + 90 + 7 + 464 + 4 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 6085872144 + 94833202500 = 78012^2 + 307950^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 100919074644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 60903864 + ... + 60905520.

Almost surely, 2^100919074644 is an apocalyptic number.

It is an amenable number.

100919074644 is an abundant number, since it is smaller than the sum of its proper divisors (154585970970).

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

100919074644 is a wasteful number, since it uses less digits than its factorization.

100919074644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345 (or 2683 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 100919074644 in words is "one hundred billion, nine hundred nineteen million, seventy-four thousand, six hundred forty-four".