97026643081 has 27 divisors (see below), whose sum is σ = 104919079413. Its totient is φ = 89709408000.

The previous prime is 97026643073. The next prime is 97026643097. The reversal of 97026643081 is 18034662079.

The square root of 97026643081 is 311491.

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

It can be written as a sum of positive squares in 4 ways, for example, as 12252497481 + 84774145600 = 110691^2 + 291160^2 .

It is not a de Polignac number, because 97026643081 - 2³ = 97026643073 is a prime.

It is a super-2 number, since 2×97026643081² (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 (97026646081) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 386560206 + ... + 386560456.

Almost surely, 2^97026643081 is an apocalyptic number.

97026643081 is the 311491-st square number.

97026643081 is the 155746-th centered octagonal number.

It is an amenable number.

97026643081 is a deficient number, since it is larger than the sum of its proper divisors (7892436332).

97026643081 is an frugal number, since it uses more digits than its factorization.

97026643081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 97026643081 in words is "ninety-seven billion, twenty-six million, six hundred forty-three thousand, eighty-one".