9980945760 has 48 divisors (see below), whose sum is σ = 31439980656. Its totient is φ = 2661585408.

The previous prime is 9980945759. The next prime is 9980945761. The reversal of 9980945760 is 675490899.

It is an interprime number because it is at equal distance from previous prime (9980945759) and next prime (9980945761).

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 9980945760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980945761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10396339 + ... + 10397298.

It is an arithmetic number, because the mean of its divisors is an integer number (654999597).

Almost surely, 2^9980945760 is an apocalyptic number.

It is an amenable number.

9980945760 is an abundant number, since it is smaller than the sum of its proper divisors (21459034896).

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

9980945760 is a wasteful number, since it uses less digits than its factorization.

9980945760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20793655 (or 20793647 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 57.

The square root of 9980945760 is about 99904.6833737038. The cubic root of 9980945760 is about 2153.0654494804.

The spelling of 9980945760 in words is "nine billion, nine hundred eighty million, nine hundred forty-five thousand, seven hundred sixty".