99064722172 has 36 divisors (see below), whose sum is σ = 187910248680. Its totient is φ = 45676992192.

The previous prime is 99064722161. The next prime is 99064722173. The reversal of 99064722172 is 27122746099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99064722173) 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, 616938 + ... + 760750.

It is an arithmetic number, because the mean of its divisors is an integer number (5219729130).

Almost surely, 2^99064722172 is an apocalyptic number.

It is an amenable number.

99064722172 is a deficient number, since it is larger than the sum of its proper divisors (88845526508).

99064722172 is a wasteful number, since it uses less digits than its factorization.

99064722172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144862 (or 144847 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 99064722172 in words is "ninety-nine billion, sixty-four million, seven hundred twenty-two thousand, one hundred seventy-two".