97923391488 has 504 divisors, whose sum is σ = 318037281120. Its totient is φ = 28983951360.

The previous prime is 97923391477. The next prime is 97923391499. The reversal of 97923391488 is 88419332979.

It is an interprime number because it is at equal distance from previous prime (97923391477) and next prime (97923391499).

It is a super-3 number, since 3×97923391488³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 361340793 + ... + 361341063.

Almost surely, 2^97923391488 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 97923391488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159018640560).

97923391488 is an abundant number, since it is smaller than the sum of its proper divisors (220113889632).

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

97923391488 is a wasteful number, since it uses less digits than its factorization.

97923391488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 318 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 63.

The spelling of 97923391488 in words is "ninety-seven billion, nine hundred twenty-three million, three hundred ninety-one thousand, four hundred eighty-eight".