99251948986 has 4 divisors (see below), whose sum is σ = 148877923482. Its totient is φ = 49625974492.

The previous prime is 99251948981. The next prime is 99251949001. The reversal of 99251948986 is 68984915299.

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

It can be written as a sum of positive squares in only one way, i.e., 63239675625 + 36012273361 = 251475^2 + 189769^2 .

It is not an unprimeable number, because it can be changed into a prime (99251948981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24812987245 + ... + 24812987248.

Almost surely, 2^99251948986 is an apocalyptic number.

99251948986 is a deficient number, since it is larger than the sum of its proper divisors (49625974496).

99251948986 is a wasteful number, since it uses less digits than its factorization.

99251948986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49625974495.

The product of its digits is 100776960, while the sum is 70.

The spelling of 99251948986 in words is "ninety-nine billion, two hundred fifty-one million, nine hundred forty-eight thousand, nine hundred eighty-six".