97156266601 has 9 divisors (see below), whose sum is σ = 97542743799. Its totient is φ = 96771318336.

The previous prime is 97156266593. The next prime is 97156266611. The reversal of 97156266601 is 10666265179.

The square root of 97156266601 is 311699.

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., 39471755625 + 57684510976 = 198675^2 + 240176^2 .

It is not a de Polignac number, because 97156266601 - 2³ = 97156266593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97156266611) 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, 110029306 + ... + 110030188.

Almost surely, 2^97156266601 is an apocalyptic number.

97156266601 is the 311699-th square number.

97156266601 is the 155850-th centered octagonal number.

It is an amenable number.

97156266601 is a deficient number, since it is larger than the sum of its proper divisors (386477198).

97156266601 is an frugal number, since it uses more digits than its factorization.

97156266601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

Multiplying 97156266601 by its sum of digits (49), we get a square (4760657063449 = 2181893²).

The spelling of 97156266601 in words is "ninety-seven billion, one hundred fifty-six million, two hundred sixty-six thousand, six hundred one".