99917062072 has 8 divisors (see below), whose sum is σ = 187344491400. Its totient is φ = 49958531032.

The previous prime is 99917062051. The next prime is 99917062081. The reversal of 99917062072 is 27026071999.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6244816372 + ... + 6244816387.

It is an arithmetic number, because the mean of its divisors is an integer number (23418061425).

Almost surely, 2^99917062072 is an apocalyptic number.

It is an amenable number.

99917062072 is a deficient number, since it is larger than the sum of its proper divisors (87427429328).

99917062072 is a wasteful number, since it uses less digits than its factorization.

99917062072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12489632765 (or 12489632761 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 52.

The spelling of 99917062072 in words is "ninety-nine billion, nine hundred seventeen million, sixty-two thousand, seventy-two".