99753075991 has 4 divisors (see below), whose sum is σ = 102970917184. Its totient is φ = 96535234800.

The previous prime is 99753075979. The next prime is 99753076037. The reversal of 99753075991 is 19957035799.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19957035799 = 2467 ⋅8089597.

It is a cyclic number.

It is not a de Polignac number, because 99753075991 - 2²¹ = 99750978839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99753078991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608920550 + ... + 1608920611.

It is an arithmetic number, because the mean of its divisors is an integer number (25742729296).

Almost surely, 2^99753075991 is an apocalyptic number.

99753075991 is a deficient number, since it is larger than the sum of its proper divisors (3217841193).

99753075991 is a wasteful number, since it uses less digits than its factorization.

99753075991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217841192.

The product of its (nonzero) digits is 24111675, while the sum is 64.

The spelling of 99753075991 in words is "ninety-nine billion, seven hundred fifty-three million, seventy-five thousand, nine hundred ninety-one".