97845654879 has 24 divisors (see below), whose sum is σ = 161537530752. Its totient is φ = 55906768080.

The previous prime is 97845654877. The next prime is 97845654899.

97845654879 is a `hidden beast` number, since 9 + 7 + 8 + 4 + 5 + 6 + 548 + 79 = 666.

97845654879 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 97845654879 - 2¹ = 97845654877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97845654877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 702424 + ... + 830114.

It is an arithmetic number, because the mean of its divisors is an integer number (6730730448).

Almost surely, 2^97845654879 is an apocalyptic number.

97845654879 is a deficient number, since it is larger than the sum of its proper divisors (63691875873).

97845654879 is a wasteful number, since it uses less digits than its factorization.

97845654879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139867 (or 139864 counting only the distinct ones).

The product of its digits is 609638400, while the sum is 72.

The spelling of 97845654879 in words is "ninety-seven billion, eight hundred forty-five million, six hundred fifty-four thousand, eight hundred seventy-nine".