99099000078 has 32 divisors (see below), whose sum is σ = 220329295872. Its totient is φ = 29508386400.

The previous prime is 99099000067. The next prime is 99099000107. The reversal of 99099000078 is 87000099099.

It is a super-2 number, since 2×99099000078² (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 15 ways as a sum of consecutive naturals, for example, 20489518 + ... + 20494353.

It is an arithmetic number, because the mean of its divisors is an integer number (6885290496).

Almost surely, 2^99099000078 is an apocalyptic number.

99099000078 is an abundant number, since it is smaller than the sum of its proper divisors (121230295794).

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

99099000078 is a wasteful number, since it uses less digits than its factorization.

99099000078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40983920.

The product of its (nonzero) digits is 367416, while the sum is 51.

The spelling of 99099000078 in words is "ninety-nine billion, ninety-nine million, seventy-eight", and thus it is an aban number and an uban number.