97745254779 has 4 divisors (see below), whose sum is σ = 130327006376. Its totient is φ = 65163503184.

The previous prime is 97745254771. The next prime is 97745254793.

97745254779 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 97745254779 - 2³ = 97745254771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97745254771) 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, 16290875794 + ... + 16290875799.

It is an arithmetic number, because the mean of its divisors is an integer number (32581751594).

Almost surely, 2^97745254779 is an apocalyptic number.

97745254779 is a deficient number, since it is larger than the sum of its proper divisors (32581751597).

97745254779 is a wasteful number, since it uses less digits than its factorization.

97745254779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32581751596.

The product of its digits is 155584800, while the sum is 66.

The spelling of 97745254779 in words is "ninety-seven billion, seven hundred forty-five million, two hundred fifty-four thousand, seven hundred seventy-nine".