97650915653 has 4 divisors (see below), whose sum is σ = 103395087180. Its totient is φ = 91906744128.

The previous prime is 97650915629. The next prime is 97650915683. The reversal of 97650915653 is 35651905679.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35651905679 = 13 ⋅2742454283.

It can be written as a sum of positive squares in 2 ways, for example, as 86014331524 + 11636584129 = 293282^2 + 107873^2 .

It is a cyclic number.

It is not a de Polignac number, because 97650915653 - 2⁶ = 97650915589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97650915683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2872085738 + ... + 2872085771.

It is an arithmetic number, because the mean of its divisors is an integer number (25848771795).

Almost surely, 2^97650915653 is an apocalyptic number.

It is an amenable number.

97650915653 is a deficient number, since it is larger than the sum of its proper divisors (5744171527).

97650915653 is a wasteful number, since it uses less digits than its factorization.

97650915653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5744171526.

The product of its (nonzero) digits is 7654500, while the sum is 56.

The spelling of 97650915653 in words is "ninety-seven billion, six hundred fifty million, nine hundred fifteen thousand, six hundred fifty-three".