99440078906232 has 64 divisors (see below), whose sum is σ = 276223255620000. Its totient is φ = 33146595263232.

The previous prime is 99440078906153. The next prime is 99440078906309. The reversal of 99440078906232 is 23260987004499.

99440078906232 is a `hidden beast` number, since 9 + 9 + 440 + 0 + 78 + 90 + 6 + 2 + 32 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 99440078906232.

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, 145669644 + ... + 146350692.

Almost surely, 2^{99440078906232} is an apocalyptic number.

It is an amenable number.

99440078906232 is an abundant number, since it is smaller than the sum of its proper divisors (176783176713768).

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

99440078906232 is a wasteful number, since it uses less digits than its factorization.

99440078906232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357037 (or 1357027 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 99440078906232 in words is "ninety-nine trillion, four hundred forty billion, seventy-eight million, nine hundred six thousand, two hundred thirty-two".