97530665401 has 9 divisors (see below), whose sum is σ = 105614525199. Its totient is φ = 90024558936.

The previous prime is 97530665321. The next prime is 97530665413. The reversal of 97530665401 is 10456603579.

The square root of 97530665401 is 312299.

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., 14427613225 + 83103052176 = 120115^2 + 288276^2 .

It is not a de Polignac number, because 97530665401 - 2⁷ = 97530665273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97530665801) 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, 4047876 + ... + 4071898.

Almost surely, 2^97530665401 is an apocalyptic number.

97530665401 is the 312299-th square number.

97530665401 is the 156150-th centered octagonal number.

It is an amenable number.

97530665401 is a deficient number, since it is larger than the sum of its proper divisors (8083859798).

97530665401 is an frugal number, since it uses more digits than its factorization.

97530665401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48072 (or 24036 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 97530665401 in words is "ninety-seven billion, five hundred thirty million, six hundred sixty-five thousand, four hundred one".