99975732648288 has 96 divisors (see below), whose sum is σ = 299928959721216. Its totient is φ = 28564327254528.

The previous prime is 99975732648221. The next prime is 99975732648293. The reversal of 99975732648288 is 88284623757999.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×99975732648288² (a number of 29 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, 155342970 + ... + 155985222.

It is an arithmetic number, because the mean of its divisors is an integer number (3124259997096).

Almost surely, 2^{99975732648288} is an apocalyptic number.

It is an amenable number.

99975732648288 is an abundant number, since it is smaller than the sum of its proper divisors (199953227072928).

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

99975732648288 is a wasteful number, since it uses less digits than its factorization.

99975732648288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873916 (or 873908 counting only the distinct ones).

The product of its digits is 26336378880, while the sum is 87.

The spelling of 99975732648288 in words is "ninety-nine trillion, nine hundred seventy-five billion, seven hundred thirty-two million, six hundred forty-eight thousand, two hundred eighty-eight".