99945532774972 has 12 divisors (see below), whose sum is σ = 175134517686576. Its totient is φ = 49907099150240.

The previous prime is 99945532774961. The next prime is 99945532775021. The reversal of 99945532774972 is 27947723554999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16416805888 + ... + 16416811975.

It is an arithmetic number, because the mean of its divisors is an integer number (14594543140548).

Almost surely, 2^{99945532774972} is an apocalyptic number.

It is an amenable number.

99945532774972 is a deficient number, since it is larger than the sum of its proper divisors (75188984911604).

99945532774972 is a wasteful number, since it uses less digits than its factorization.

99945532774972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32833618628 (or 32833618626 counting only the distinct ones).

The product of its digits is 10802030400, while the sum is 82.

The spelling of 99945532774972 in words is "ninety-nine trillion, nine hundred forty-five billion, five hundred thirty-two million, seven hundred seventy-four thousand, nine hundred seventy-two".