99255056981 has 4 divisors (see below), whose sum is σ = 101366866752. Its totient is φ = 97143247212.

The previous prime is 99255056833. The next prime is 99255057007. The reversal of 99255056981 is 18965055299.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99255056981 is a prime.

It is a super-3 number, since 3×99255056981³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99255056981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99255055981) 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, 1055904815 + ... + 1055904908.

It is an arithmetic number, because the mean of its divisors is an integer number (25341716688).

Almost surely, 2^99255056981 is an apocalyptic number.

It is an amenable number.

99255056981 is a deficient number, since it is larger than the sum of its proper divisors (2111809771).

99255056981 is a wasteful number, since it uses less digits than its factorization.

99255056981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111809770.

The product of its (nonzero) digits is 8748000, while the sum is 59.

The spelling of 99255056981 in words is "ninety-nine billion, two hundred fifty-five million, fifty-six thousand, nine hundred eighty-one".