97816615869 has 32 divisors (see below), whose sum is σ = 150992343040. Its totient is φ = 55168776000.

The previous prime is 97816615861. The next prime is 97816615891. The reversal of 97816615869 is 96851661879.

It is not a de Polignac number, because 97816615869 - 2³ = 97816615861 is a prime.

It is a super-2 number, since 2×97816615869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97816615861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5866194 + ... + 5882844.

It is an arithmetic number, because the mean of its divisors is an integer number (4718510720).

Almost surely, 2^97816615869 is an apocalyptic number.

It is an amenable number.

97816615869 is a deficient number, since it is larger than the sum of its proper divisors (53175727171).

97816615869 is a wasteful number, since it uses less digits than its factorization.

97816615869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20281.

The product of its digits is 39191040, while the sum is 66.

The spelling of 97816615869 in words is "ninety-seven billion, eight hundred sixteen million, six hundred fifteen thousand, eight hundred sixty-nine".