97688420520 has 64 divisors (see below), whose sum is σ = 293086080000. Its totient is φ = 26048395008.

The previous prime is 97688420503. The next prime is 97688420521. The reversal of 97688420520 is 2502488679.

It is a super-3 number, since 3×97688420520³ (a number of 34 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (97688420521) 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, 2890681 + ... + 2924279.

It is an arithmetic number, because the mean of its divisors is an integer number (4579470000).

Almost surely, 2^97688420520 is an apocalyptic number.

It is an amenable number.

97688420520 is an abundant number, since it is smaller than the sum of its proper divisors (195397659480).

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

97688420520 is a wasteful number, since it uses less digits than its factorization.

97688420520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57842 (or 57838 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 97688420520 in words is "ninety-seven billion, six hundred eighty-eight million, four hundred twenty thousand, five hundred twenty".