44918913915 has 24 divisors (see below), whose sum is σ = 79670139120. Its totient is φ = 23399619264.

The previous prime is 44918913899. The next prime is 44918913959. The reversal of 44918913915 is 51931981944.

It is a happy number.

44918913915 is a `hidden beast` number, since 4 + 491 + 8 + 9 + 139 + 15 = 666.

It is not a de Polignac number, because 44918913915 - 2⁴ = 44918913899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11605020 + ... + 11608889.

It is an arithmetic number, because the mean of its divisors is an integer number (3319589130).

Almost surely, 2^44918913915 is an apocalyptic number.

44918913915 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

44918913915 is a deficient number, since it is larger than the sum of its proper divisors (34751225205).

44918913915 is a wasteful number, since it uses less digits than its factorization.

44918913915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23213963 (or 23213960 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The spelling of 44918913915 in words is "forty-four billion, nine hundred eighteen million, nine hundred thirteen thousand, nine hundred fifteen".