99401549544 has 80 divisors (see below), whose sum is σ = 303726978720. Its totient is φ = 30121679520.

The previous prime is 99401549521. The next prime is 99401549561. The reversal of 99401549544 is 44594510499.

99401549544 is a `hidden beast` number, since 9 + 9 + 40 + 1 + 54 + 9 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6965484 + ... + 6979739.

It is an arithmetic number, because the mean of its divisors is an integer number (3796587234).

Almost surely, 2^99401549544 is an apocalyptic number.

It is an amenable number.

99401549544 is an abundant number, since it is smaller than the sum of its proper divisors (204325429176).

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

99401549544 is a wasteful number, since it uses less digits than its factorization.

99401549544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13945252 (or 13945239 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 99401549544 in words is "ninety-nine billion, four hundred one million, five hundred forty-nine thousand, five hundred forty-four".