9981764352 has 144 divisors (see below), whose sum is σ = 33734830080. Its totient is φ = 2851918848.

The previous prime is 9981764329. The next prime is 9981764371. The reversal of 9981764352 is 2534671899.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54768 + ... + 151535.

Almost surely, 2^9981764352 is an apocalyptic number.

It is an amenable number.

9981764352 is an abundant number, since it is smaller than the sum of its proper divisors (23753065728).

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

9981764352 is a wasteful number, since it uses less digits than its factorization.

9981764352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206335 (or 206315 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 9981764352 is about 99908.7801546991. The cubic root of 9981764352 is about 2153.1243094326.

The spelling of 9981764352 in words is "nine billion, nine hundred eighty-one million, seven hundred sixty-four thousand, three hundred fifty-two".