97317376578 has 48 divisors (see below), whose sum is σ = 220257588096. Its totient is φ = 30995490240.

The previous prime is 97317376577. The next prime is 97317376631. The reversal of 97317376578 is 87567371379.

It is not an unprimeable number, because it can be changed into a prime (97317376577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 262483 + ... + 513353.

It is an arithmetic number, because the mean of its divisors is an integer number (4588699752).

Almost surely, 2^97317376578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97317376578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110128794048).

97317376578 is an abundant number, since it is smaller than the sum of its proper divisors (122940211518).

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

97317376578 is a wasteful number, since it uses less digits than its factorization.

97317376578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251839 (or 251836 counting only the distinct ones).

The product of its digits is 46675440, while the sum is 63.

The spelling of 97317376578 in words is "ninety-seven billion, three hundred seventeen million, three hundred seventy-six thousand, five hundred seventy-eight".