97951581572163 has 64 divisors (see below), whose sum is σ = 159631976669184. Its totient is φ = 52690594880000.

The previous prime is 97951581572153. The next prime is 97951581572189. The reversal of 97951581572163 is 36127518515979.

It is not a de Polignac number, because 97951581572163 - 2¹⁸ = 97951581310019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (97951581572153) 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 63 ways as a sum of consecutive naturals, for example, 52544313 + ... + 54376538.

It is an arithmetic number, because the mean of its divisors is an integer number (2494249635456).

Almost surely, 2^{97951581572163} is an apocalyptic number.

97951581572163 is a deficient number, since it is larger than the sum of its proper divisors (61680395097021).

97951581572163 is a wasteful number, since it uses less digits than its factorization.

97951581572163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106920976.

The product of its digits is 142884000, while the sum is 69.

The spelling of 97951581572163 in words is "ninety-seven trillion, nine hundred fifty-one billion, five hundred eighty-one million, five hundred seventy-two thousand, one hundred sixty-three".