44981391105 has 96 divisors (see below), whose sum is σ = 90142101504. Its totient is φ = 20324608128.

The previous prime is 44981391067. The next prime is 44981391163. The reversal of 44981391105 is 50119318944.

44981391105 is a `hidden beast` number, since 449 + 8 + 13 + 91 + 105 = 666.

It is not a de Polignac number, because 44981391105 - 2⁸ = 44981390849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23586562 + ... + 23588468.

It is an arithmetic number, because the mean of its divisors is an integer number (938980224).

Almost surely, 2^44981391105 is an apocalyptic number.

44981391105 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

44981391105 is an abundant number, since it is smaller than the sum of its proper divisors (45160710399).

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

44981391105 is a wasteful number, since it uses less digits than its factorization.

44981391105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755 (or 2752 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 44981391105 in words is "forty-four billion, nine hundred eighty-one million, three hundred ninety-one thousand, one hundred five".