99772868271 has 8 divisors (see below), whose sum is σ = 133112971440. Its totient is φ = 66474005312.

The previous prime is 99772868243. The next prime is 99772868323. The reversal of 99772868271 is 17286827799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99772868271 - 2²¹ = 99770771119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99772868971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10304406 + ... + 10314083.

It is an arithmetic number, because the mean of its divisors is an integer number (16639121430).

Almost surely, 2^99772868271 is an apocalyptic number.

99772868271 is a deficient number, since it is larger than the sum of its proper divisors (33340103169).

99772868271 is a wasteful number, since it uses less digits than its factorization.

99772868271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20620105.

The product of its digits is 42674688, while the sum is 66.

The spelling of 99772868271 in words is "ninety-nine billion, seven hundred seventy-two million, eight hundred sixty-eight thousand, two hundred seventy-one".