99777374044 has 12 divisors (see below), whose sum is σ = 178325519904. Its totient is φ = 48827225504.

The previous prime is 99777374033. The next prime is 99777374057. The reversal of 99777374044 is 44047377799.

It is a super-2 number, since 2×99777374044² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 265365169 + ... + 265365544.

It is an arithmetic number, because the mean of its divisors is an integer number (14860459992).

Almost surely, 2^99777374044 is an apocalyptic number.

99777374044 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

99777374044 is a deficient number, since it is larger than the sum of its proper divisors (78548145860).

99777374044 is a wasteful number, since it uses less digits than its factorization.

99777374044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530730764 (or 530730762 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 61.

The spelling of 99777374044 in words is "ninety-nine billion, seven hundred seventy-seven million, three hundred seventy-four thousand, forty-four".