99796279644 has 36 divisors (see below), whose sum is σ = 252338224320. Its totient is φ = 33255482880.

The previous prime is 99796279643. The next prime is 99796279679. The reversal of 99796279644 is 44697269799.

99796279644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99796279643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291717 + ... + 533564.

It is an arithmetic number, because the mean of its divisors is an integer number (7009395120).

Almost surely, 2^99796279644 is an apocalyptic number.

It is an amenable number.

99796279644 is an abundant number, since it is smaller than the sum of its proper divisors (152541944676).

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

99796279644 is a wasteful number, since it uses less digits than its factorization.

99796279644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828650 (or 828645 counting only the distinct ones).

The product of its digits is 370355328, while the sum is 72.

The spelling of 99796279644 in words is "ninety-nine billion, seven hundred ninety-six million, two hundred seventy-nine thousand, six hundred forty-four".