97425761161 has 9 divisors (see below), whose sum is σ = 97782579111. Its totient is φ = 97070243952.

The previous prime is 97425761131. The next prime is 97425761183. The reversal of 97425761161 is 16116752479.

The square root of 97425761161 is 312131.

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., 84259575625 + 13166185536 = 290275^2 + 114744^2 .

It is not a de Polignac number, because 97425761161 - 2¹⁹ = 97425236873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97425761131) 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, 142643526 + ... + 142644208.

Almost surely, 2^97425761161 is an apocalyptic number.

97425761161 is the 312131-st square number.

97425761161 is the 156066-th centered octagonal number.

It is an amenable number.

97425761161 is a deficient number, since it is larger than the sum of its proper divisors (356817950).

97425761161 is an frugal number, since it uses more digits than its factorization.

97425761161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 1140 counting only the distinct ones).

The product of its digits is 635040, while the sum is 49.

Multiplying 97425761161 by its sum of digits (49), we get a square (4773862296889 = 2184917²).

The spelling of 97425761161 in words is "ninety-seven billion, four hundred twenty-five million, seven hundred sixty-one thousand, one hundred sixty-one".