9977640750 has 576 divisors, whose sum is σ = 35370915840. Its totient is φ = 2047032000.

The previous prime is 9977640727. The next prime is 9977640781. The reversal of 9977640750 is 570467799.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 126299211 + ... + 126299289.

It is an arithmetic number, because the mean of its divisors is an integer number (61407840).

Almost surely, 2^9977640750 is an apocalyptic number.

9977640750 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9977640750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17685457920).

9977640750 is an abundant number, since it is smaller than the sum of its proper divisors (25393275090).

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

9977640750 is an equidigital number, since it uses as much as digits as its factorization.

9977640750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 3333960, while the sum is 54.

The square root of 9977640750 is about 99888.1411880309. The cubic root of 9977640750 is about 2152.8277736599.

The spelling of 9977640750 in words is "nine billion, nine hundred seventy-seven million, six hundred forty thousand, seven hundred fifty".