97454708621 has 4 divisors (see below), whose sum is σ = 97516743744. Its totient is φ = 97392673500.

The previous prime is 97454708609. The next prime is 97454708647. The reversal of 97454708621 is 12680745479.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12680745479 = 71 ⋅178602049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97454708621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97454708671) 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, 31015205 + ... + 31018346.

It is an arithmetic number, because the mean of its divisors is an integer number (24379185936).

Almost surely, 2^97454708621 is an apocalyptic number.

It is an amenable number.

97454708621 is a deficient number, since it is larger than the sum of its proper divisors (62035123).

97454708621 is a wasteful number, since it uses less digits than its factorization.

97454708621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62035122.

The product of its (nonzero) digits is 3386880, while the sum is 53.

The spelling of 97454708621 in words is "ninety-seven billion, four hundred fifty-four million, seven hundred eight thousand, six hundred twenty-one".