97745274797641 has 3 divisors (see below), whose sum is σ = 97745284684263. Its totient is φ = 97745264911020.

The previous prime is 97745274797629. The next prime is 97745274797671. The reversal of 97745274797641 is 14679747254779.

The square root of 97745274797641 is 9886621.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 23579075277241 + 74166199520400 = 4855829^2 + 8611980^2 .

It is not a de Polignac number, because 97745274797641 - 2²⁷ = 97745140579913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97745274797671) 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 2 ways as a sum of consecutive naturals, for example, 4943311 + ... + 14829931.

It is an arithmetic number, because the mean of its divisors is an integer number (32581761561421).

Almost surely, 2^{97745274797641} is an apocalyptic number.

97745274797641 is the 9886621-st square number.

97745274797641 is the 4943311-st centered octagonal number.

It is an amenable number.

97745274797641 is a deficient number, since it is larger than the sum of its proper divisors (9886622).

97745274797641 is an frugal number, since it uses more digits than its factorization.

97745274797641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19773242 (or 9886621 counting only the distinct ones).

The product of its digits is 5227649280, while the sum is 79.

The spelling of 97745274797641 in words is "ninety-seven trillion, seven hundred forty-five billion, two hundred seventy-four million, seven hundred ninety-seven thousand, six hundred forty-one".