99772073868 has 18 divisors (see below), whose sum is σ = 232804058844. Its totient is φ = 33256993224.

The previous prime is 99772073813. The next prime is 99772073873. The reversal of 99772073868 is 86837027799.

It is a super-3 number, since 3×99772073868³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99772073799 and 99772073808.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1048605 + ... + 1139787.

Almost surely, 2^99772073868 is an apocalyptic number.

It is an amenable number.

99772073868 is an abundant number, since it is smaller than the sum of its proper divisors (133031984976).

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

99772073868 is an frugal number, since it uses more digits than its factorization.

99772073868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182373 (or 91188 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 66.

The spelling of 99772073868 in words is "ninety-nine billion, seven hundred seventy-two million, seventy-three thousand, eight hundred sixty-eight".