99717255392 has 48 divisors (see below), whose sum is σ = 203837860800. Its totient is φ = 47961607680.

The previous prime is 99717255373. The next prime is 99717255431. The reversal of 99717255392 is 29355271799.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53234 + ... + 449742.

It is an arithmetic number, because the mean of its divisors is an integer number (4246622100).

Almost surely, 2^99717255392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99717255392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101918930400).

99717255392 is an abundant number, since it is smaller than the sum of its proper divisors (104120605408).

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

99717255392 is a wasteful number, since it uses less digits than its factorization.

99717255392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396819 (or 396811 counting only the distinct ones).

The product of its digits is 10716300, while the sum is 59.

The spelling of 99717255392 in words is "ninety-nine billion, seven hundred seventeen million, two hundred fifty-five thousand, three hundred ninety-two".