9975115500 has 768 divisors, whose sum is σ = 38041436160. Its totient is φ = 1978368000.

The previous prime is 9975115499. The next prime is 9975115511. The reversal of 9975115500 is 55115799.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 212236477 + ... + 212236523.

It is an arithmetic number, because the mean of its divisors is an integer number (49533120).

Almost surely, 2^9975115500 is an apocalyptic number.

It is a pronic number, being equal to 99875×99876.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9975115500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19020718080).

9975115500 is an abundant number, since it is smaller than the sum of its proper divisors (28066320660).

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

9975115500 is a wasteful number, since it uses less digits than its factorization.

9975115500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 70875, while the sum is 42.

The square root of 9975115500 is about 99875.4999987484. The cubic root of 9975115500 is about 2152.6461379682.

The spelling of 9975115500 in words is "nine billion, nine hundred seventy-five million, one hundred fifteen thousand, five hundred".