99621239329936 has 45 divisors (see below), whose sum is σ = 194006427872691. Its totient is φ = 49556362550112.

The previous prime is 99621239329933. The next prime is 99621239329943. The reversal of 99621239329936 is 63992393212699.

The square root of 99621239329936 is 9981044.

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

It is a super-3 number, since 3×99621239329936³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99621239329933) 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 8 ways as a sum of consecutive naturals, for example, 7944904755 + ... + 7944917293.

Almost surely, 2^{99621239329936} is an apocalyptic number.

99621239329936 is the 9981044-th square number.

It is an amenable number.

99621239329936 is a deficient number, since it is larger than the sum of its proper divisors (94385188542755).

99621239329936 is an frugal number, since it uses more digits than its factorization.

99621239329936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25484 (or 12740 counting only the distinct ones).

The product of its digits is 459165024, while the sum is 73.

The spelling of 99621239329936 in words is "ninety-nine trillion, six hundred twenty-one billion, two hundred thirty-nine million, three hundred twenty-nine thousand, nine hundred thirty-six".