9976719816 has 48 divisors (see below), whose sum is σ = 30880324800. Its totient is φ = 2850491232.

The previous prime is 9976719791. The next prime is 9976719853. The reversal of 9976719816 is 6189176799.

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9897036 + ... + 9898043.

It is an arithmetic number, because the mean of its divisors is an integer number (643340100).

Almost surely, 2^9976719816 is an apocalyptic number.

It is an amenable number.

9976719816 is an abundant number, since it is smaller than the sum of its proper divisors (20903604984).

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

9976719816 is a wasteful number, since it uses less digits than its factorization.

9976719816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19795098 (or 19795091 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 63.

The square root of 9976719816 is about 99883.5312551574. The cubic root of 9976719816 is about 2152.7615364486.

The spelling of 9976719816 in words is "nine billion, nine hundred seventy-six million, seven hundred nineteen thousand, eight hundred sixteen".