97516872165887 has 4 divisors (see below), whose sum is σ = 97516897389480. Its totient is φ = 97516846942296.

The previous prime is 97516872165883. The next prime is 97516872165943. The reversal of 97516872165887 is 78856127861579.

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 97516872165887 - 2² = 97516872165883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97516872165883) 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, 5461268 + ... + 14995305.

It is an arithmetic number, because the mean of its divisors is an integer number (24379224347370).

Almost surely, 2^{97516872165887} is an apocalyptic number.

97516872165887 is a deficient number, since it is larger than the sum of its proper divisors (25223593).

97516872165887 is a wasteful number, since it uses less digits than its factorization.

97516872165887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25223592.

The product of its digits is 2844979200, while the sum is 80.

The spelling of 97516872165887 in words is "ninety-seven trillion, five hundred sixteen billion, eight hundred seventy-two million, one hundred sixty-five thousand, eight hundred eighty-seven".