99851181456 has 40 divisors (see below), whose sum is σ = 277791109120. Its totient is φ = 30723440256.

The previous prime is 99851181449. The next prime is 99851181461. The reversal of 99851181456 is 65418115899.

It is a junction number, because it is equal to n+sod(n) for n = 99851181396 and 99851181405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80008336 + ... + 80009583.

It is an arithmetic number, because the mean of its divisors is an integer number (6944777728).

Almost surely, 2^99851181456 is an apocalyptic number.

It is an amenable number.

99851181456 is an abundant number, since it is smaller than the sum of its proper divisors (177939927664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99851181456 is a wasteful number, since it uses less digits than its factorization.

99851181456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160017943 (or 160017937 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 57.

The spelling of 99851181456 in words is "ninety-nine billion, eight hundred fifty-one million, one hundred eighty-one thousand, four hundred fifty-six".