97588136881 has 9 divisors (see below), whose sum is σ = 100308819051. Its totient is φ = 94939373592.

The previous prime is 97588136873. The next prime is 97588136887. The reversal of 97588136881 is 18863188579.

The square root of 97588136881 is 312391.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 87323205025 + 10264931856 = 295505^2 + 101316^2 .

It is not a de Polignac number, because 97588136881 - 2³ = 97588136873 is a prime.

It is a super-2 number, since 2×97588136881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97588136887) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11554246 + ... + 11562688.

It is an arithmetic number, because the mean of its divisors is an integer number (11145424339).

Almost surely, 2^97588136881 is an apocalyptic number.

97588136881 is the 312391-st square number.

97588136881 is the 156196-th centered octagonal number.

It is an amenable number.

97588136881 is a deficient number, since it is larger than the sum of its proper divisors (2720682170).

97588136881 is an frugal number, since it uses more digits than its factorization.

97588136881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16960 (or 8480 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 64.

Multiplying 97588136881 by its sum of digits (64), we get a square (6245640760384 = 2499128²).

The spelling of 97588136881 in words is "ninety-seven billion, five hundred eighty-eight million, one hundred thirty-six thousand, eight hundred eighty-one".