99975483720 has 192 divisors, whose sum is σ = 371462008320. Its totient is φ = 22843878912.

The previous prime is 99975483701. The next prime is 99975483743. The reversal of 99975483720 is 2738457999.

It is a Cunningham number, because it is equal to 316189²-1.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11378449 + ... + 11387231.

It is an arithmetic number, because the mean of its divisors is an integer number (1934697960).

Almost surely, 2^99975483720 is an apocalyptic number.

99975483720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99975483720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185731004160).

99975483720 is an abundant number, since it is smaller than the sum of its proper divisors (271486524600).

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

99975483720 is a wasteful number, since it uses less digits than its factorization.

99975483720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13324 (or 13317 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 63.

The spelling of 99975483720 in words is "ninety-nine billion, nine hundred seventy-five million, four hundred eighty-three thousand, seven hundred twenty".