9977699505792 has 128 divisors (see below), whose sum is σ = 27506486145600. Its totient is φ = 3200752558080.

The previous prime is 9977699505743. The next prime is 9977699505841. The reversal of 9977699505792 is 2975059967799.

It is an interprime number because it is at equal distance from previous prime (9977699505743) and next prime (9977699505841).

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1959492 + ... + 4878012.

Almost surely, 2^{9977699505792} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9977699505792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13753243072800).

9977699505792 is an abundant number, since it is smaller than the sum of its proper divisors (17528786639808).

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

9977699505792 is a wasteful number, since it uses less digits than its factorization.

9977699505792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918874 (or 2918862 counting only the distinct ones).

The product of its (nonzero) digits is 6076142100, while the sum is 84.

The spelling of 9977699505792 in words is "nine trillion, nine hundred seventy-seven billion, six hundred ninety-nine million, five hundred five thousand, seven hundred ninety-two".