99974795657472 has 720 divisors, whose sum is σ = 315837191917632. Its totient is φ = 31415716823040.

The previous prime is 99974795657437. The next prime is 99974795657479. The reversal of 99974795657472 is 27475659747999.

99974795657472 is a `hidden beast` number, since 9 + 9 + 9 + 7 + 4 + 79 + 5 + 65 + 7 + 472 = 666.

It is not an unprimeable number, because it can be changed into a prime (99974795657479) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 3135661243 + ... + 3135693125.

Almost surely, 2^{99974795657472} 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 99974795657472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157918595958816).

99974795657472 is an abundant number, since it is smaller than the sum of its proper divisors (215862396260160).

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

99974795657472 is a wasteful number, since it uses less digits than its factorization.

99974795657472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32076 (or 32053 counting only the distinct ones).

The product of its digits is 75614212800, while the sum is 90.

The spelling of 99974795657472 in words is "ninety-nine trillion, nine hundred seventy-four billion, seven hundred ninety-five million, six hundred fifty-seven thousand, four hundred seventy-two".