99777253984 has 24 divisors (see below), whose sum is σ = 196465490928. Its totient is φ = 49881256320.

The previous prime is 99777253973. The next prime is 99777253987. The reversal of 99777253984 is 48935277799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99777253987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7027 + ... + 446770.

It is an arithmetic number, because the mean of its divisors is an integer number (8186062122).

Almost surely, 2^99777253984 is an apocalyptic number.

It is an amenable number.

99777253984 is a deficient number, since it is larger than the sum of its proper divisors (96688236944).

99777253984 is a wasteful number, since it uses less digits than its factorization.

99777253984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460678 (or 460670 counting only the distinct ones).

The product of its digits is 240045120, while the sum is 70.

The spelling of 99777253984 in words is "ninety-nine billion, seven hundred seventy-seven million, two hundred fifty-three thousand, nine hundred eighty-four".