99168743664 has 80 divisors (see below), whose sum is σ = 284701420800. Its totient is φ = 33050395584.

The previous prime is 99168743651. The next prime is 99168743671. The reversal of 99168743664 is 46634786199.

It is a super-2 number, since 2×99168743664² (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, 2911597 + ... + 2945459.

It is an arithmetic number, because the mean of its divisors is an integer number (3558767760).

Almost surely, 2^99168743664 is an apocalyptic number.

It is an amenable number.

99168743664 is an abundant number, since it is smaller than the sum of its proper divisors (185532677136).

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

99168743664 is a wasteful number, since it uses less digits than its factorization.

99168743664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40659 (or 40647 counting only the distinct ones).

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

The spelling of 99168743664 in words is "ninety-nine billion, one hundred sixty-eight million, seven hundred forty-three thousand, six hundred sixty-four".