99238252571 has 4 divisors (see below), whose sum is σ = 99301909200. Its totient is φ = 99174595944.

The previous prime is 99238252483. The next prime is 99238252591. The reversal of 99238252571 is 17525283299.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99238252571 - 2²² = 99234058267 is a prime.

It is a super-2 number, since 2×99238252571² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99238252591) 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, 31825976 + ... + 31829093.

It is an arithmetic number, because the mean of its divisors is an integer number (24825477300).

Almost surely, 2^99238252571 is an apocalyptic number.

99238252571 is a deficient number, since it is larger than the sum of its proper divisors (63656629).

99238252571 is a wasteful number, since it uses less digits than its factorization.

99238252571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63656628.

The product of its digits is 2721600, while the sum is 53.

The spelling of 99238252571 in words is "ninety-nine billion, two hundred thirty-eight million, two hundred fifty-two thousand, five hundred seventy-one".