97791853456 has 120 divisors (see below), whose sum is σ = 221287446072. Its totient is φ = 41689190400.

The previous prime is 97791853441. The next prime is 97791853543. The reversal of 97791853456 is 65435819779.

It can be written as a sum of positive squares in 4 ways, for example, as 35133753600 + 62658099856 = 187440^2 + 250316^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9638146 + ... + 9648286.

Almost surely, 2^97791853456 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 97791853456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110643723036).

97791853456 is an abundant number, since it is smaller than the sum of its proper divisors (123495592616).

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

97791853456 is a wasteful number, since it uses less digits than its factorization.

97791853456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10481 (or 10464 counting only the distinct ones).

The product of its digits is 57153600, while the sum is 64.

The spelling of 97791853456 in words is "ninety-seven billion, seven hundred ninety-one million, eight hundred fifty-three thousand, four hundred fifty-six".