9977193765 has 128 divisors (see below), whose sum is σ = 22184755200. Its totient is φ = 4133099520.

The previous prime is 9977193763. The next prime is 9977193773. The reversal of 9977193765 is 5673917799.

It is not a de Polignac number, because 9977193765 - 2¹ = 9977193763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9977193763) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3668076 + ... + 3670794.

It is an arithmetic number, because the mean of its divisors is an integer number (173318400).

Almost surely, 2^9977193765 is an apocalyptic number.

It is an amenable number.

9977193765 is an abundant number, since it is smaller than the sum of its proper divisors (12207561435).

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

9977193765 is a wasteful number, since it uses less digits than its factorization.

9977193765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104 (or 3098 counting only the distinct ones).

The product of its digits is 22504230, while the sum is 63.

The square root of 9977193765 is about 99885.9037352118. The cubic root of 9977193765 is about 2152.7956252420.

The spelling of 9977193765 in words is "nine billion, nine hundred seventy-seven million, one hundred ninety-three thousand, seven hundred sixty-five".