9980677788 has 48 divisors (see below), whose sum is σ = 24058890240. Its totient is φ = 3216974400.

The previous prime is 9980677771. The next prime is 9980677843. The reversal of 9980677788 is 8877760899.

It is a super-2 number, since 2×9980677788² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 480498 + ... + 500838.

It is an arithmetic number, because the mean of its divisors is an integer number (501226880).

Almost surely, 2^9980677788 is an apocalyptic number.

It is an amenable number.

9980677788 is an abundant number, since it is smaller than the sum of its proper divisors (14078212452).

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

9980677788 is a wasteful number, since it uses less digits than its factorization.

9980677788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21698 (or 21696 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 69.

The square root of 9980677788 is about 99903.3422263740. The cubic root of 9980677788 is about 2153.0461805510.

The spelling of 9980677788 in words is "nine billion, nine hundred eighty million, six hundred seventy-seven thousand, seven hundred eighty-eight".