99421657344 has 81 divisors (see below), whose sum is σ = 286700792833. Its totient is φ = 33135507456.

The previous prime is 99421657339. The next prime is 99421657399. The reversal of 99421657344 is 44375612499.

The square root of 99421657344 is 315312.

It is a perfect power (a square), and thus also a powerful number.

99421657344 is a `hidden beast` number, since 9 + 9 + 4 + 21 + 6 + 573 + 44 = 666.

It can be written as a sum of positive squares in only one way, i.e., 89453631744 + 9968025600 = 299088^2 + 99840^2 .

It is a super-3 number, since 3×99421657344³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 15131692 + ... + 15138260.

Almost surely, 2^99421657344 is an apocalyptic number.

99421657344 is the 315312-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99421657344

99421657344 is an abundant number, since it is smaller than the sum of its proper divisors (187279135489).

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

99421657344 is an frugal number, since it uses more digits than its factorization.

99421657344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13160 (or 6574 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 99421657344 in words is "ninety-nine billion, four hundred twenty-one million, six hundred fifty-seven thousand, three hundred forty-four".