97605656628481 has 4 divisors (see below), whose sum is σ = 97605814519552. Its totient is φ = 97605498737412.

The previous prime is 97605656628449. The next prime is 97605656628503. The reversal of 97605656628481 is 18482665650679.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97605656628481 - 2⁵ = 97605656628449 is a prime.

It is a super-2 number, since 2×97605656628481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97605656628421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78014601 + ... + 79255846.

It is an arithmetic number, because the mean of its divisors is an integer number (24401453629888).

Almost surely, 2^{97605656628481} is an apocalyptic number.

It is an amenable number.

97605656628481 is a deficient number, since it is larger than the sum of its proper divisors (157891071).

97605656628481 is a wasteful number, since it uses less digits than its factorization.

97605656628481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157891070.

The product of its (nonzero) digits is 1045094400, while the sum is 73.

The spelling of 97605656628481 in words is "ninety-seven trillion, six hundred five billion, six hundred fifty-six million, six hundred twenty-eight thousand, four hundred eighty-one".