97769256816 has 80 divisors (see below), whose sum is σ = 314893202688. Its totient is φ = 25394611200.

The previous prime is 97769256811. The next prime is 97769256817. The reversal of 97769256816 is 61865296779.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97769256811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13222665 + ... + 13230056.

Almost surely, 2^97769256816 is an apocalyptic number.

It is an amenable number.

97769256816 is an abundant number, since it is smaller than the sum of its proper divisors (217123945872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97769256816 is a wasteful number, since it uses less digits than its factorization.

97769256816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26452750 (or 26452744 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 66.

The spelling of 97769256816 in words is "ninety-seven billion, seven hundred sixty-nine million, two hundred fifty-six thousand, eight hundred sixteen".