97971164899 has 4 divisors (see below), whose sum is σ = 101349480960. Its totient is φ = 94592848840.

The previous prime is 97971164891. The next prime is 97971164903. The reversal of 97971164899 is 99846117979.

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

It is a cyclic number.

It is not a de Polignac number, because 97971164899 - 2³ = 97971164891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97971164891) 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, 1689157987 + ... + 1689158044.

It is an arithmetic number, because the mean of its divisors is an integer number (25337370240).

Almost surely, 2^97971164899 is an apocalyptic number.

97971164899 is a deficient number, since it is larger than the sum of its proper divisors (3378316061).

97971164899 is a wasteful number, since it uses less digits than its factorization.

97971164899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378316060.

The product of its digits is 61725888, while the sum is 70.

The spelling of 97971164899 in words is "ninety-seven billion, nine hundred seventy-one million, one hundred sixty-four thousand, eight hundred ninety-nine".