97128774032 has 20 divisors (see below), whose sum is σ = 199256823756. Its totient is φ = 45707658240.

The previous prime is 97128774031. The next prime is 97128774053. The reversal of 97128774032 is 23047782179.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51758070016 + 45370704016 = 227504^2 + 213004^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (97128774031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178545269 + ... + 178545812.

Almost surely, 2^97128774032 is an apocalyptic number.

It is an amenable number.

97128774032 is an abundant number, since it is smaller than the sum of its proper divisors (102128049724).

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

97128774032 is a wasteful number, since it uses less digits than its factorization.

97128774032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357091106 (or 357091100 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 97128774032 in words is "ninety-seven billion, one hundred twenty-eight million, seven hundred seventy-four thousand, thirty-two".