49173021915 has 32 divisors (see below), whose sum is σ = 82841875200. Its totient is φ = 24838070400.

The previous prime is 49173021889. The next prime is 49173021929. The reversal of 49173021915 is 51912037194.

It is not a de Polignac number, because 49173021915 - 2¹⁵ = 49172989147 is a prime.

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, 1031476 + ... + 1078094.

It is an arithmetic number, because the mean of its divisors is an integer number (2588808600).

Almost surely, 2^49173021915 is an apocalyptic number.

49173021915 is a deficient number, since it is larger than the sum of its proper divisors (33668853285).

49173021915 is a wasteful number, since it uses less digits than its factorization.

49173021915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50347.

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 49173021915 in words is "forty-nine billion, one hundred seventy-three million, twenty-one thousand, nine hundred fifteen".