99251781105 has 32 divisors (see below), whose sum is σ = 168227539200. Its totient is φ = 49795807232.

The previous prime is 99251781059. The next prime is 99251781121. The reversal of 99251781105 is 50118715299.

It is a cyclic number.

It is not a de Polignac number, because 99251781105 - 2⁷ = 99251780977 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424501 + ... + 615389.

It is an arithmetic number, because the mean of its divisors is an integer number (5257110600).

Almost surely, 2^99251781105 is an apocalyptic number.

It is an amenable number.

99251781105 is a deficient number, since it is larger than the sum of its proper divisors (68975758095).

99251781105 is a wasteful number, since it uses less digits than its factorization.

99251781105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192953.

The product of its (nonzero) digits is 226800, while the sum is 48.

The spelling of 99251781105 in words is "ninety-nine billion, two hundred fifty-one million, seven hundred eighty-one thousand, one hundred five".