97489138960 has 20 divisors (see below), whose sum is σ = 226662248268. Its totient is φ = 38995655552.

The previous prime is 97489138949. The next prime is 97489138973. The reversal of 97489138960 is 6983198479.

It can be written as a sum of positive squares in 2 ways, for example, as 29814238224 + 67674900736 = 172668^2 + 260144^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 97489138892 and 97489138901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609307039 + ... + 609307198.

Almost surely, 2^97489138960 is an apocalyptic number.

It is an amenable number.

97489138960 is an abundant number, since it is smaller than the sum of its proper divisors (129173109308).

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

97489138960 is a wasteful number, since it uses less digits than its factorization.

97489138960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218614250 (or 1218614244 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 64.

The spelling of 97489138960 in words is "ninety-seven billion, four hundred eighty-nine million, one hundred thirty-eight thousand, nine hundred sixty".