97720299376 has 80 divisors (see below), whose sum is σ = 226182398400. Its totient is φ = 40858567680.

The previous prime is 97720299371. The next prime is 97720299421. The reversal of 97720299376 is 67399202779.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97720299371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7860 + ... + 442156.

It is an arithmetic number, because the mean of its divisors is an integer number (2827279980).

Almost surely, 2^97720299376 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 97720299376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113091199200).

97720299376 is an abundant number, since it is smaller than the sum of its proper divisors (128462099024).

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

97720299376 is a wasteful number, since it uses less digits than its factorization.

97720299376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434367 (or 434347 counting only the distinct ones).

The product of its (nonzero) digits is 18003384, while the sum is 61.

The spelling of 97720299376 in words is "ninety-seven billion, seven hundred twenty million, two hundred ninety-nine thousand, three hundred seventy-six".