49989521505 has 32 divisors (see below), whose sum is σ = 99719359488. Its totient is φ = 20774865600.

The previous prime is 49989521497. The next prime is 49989521563. The reversal of 49989521505 is 50512598994.

It is not a de Polignac number, because 49989521505 - 2³ = 49989521497 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21639331 + ... + 21641640.

It is an arithmetic number, because the mean of its divisors is an integer number (3116229984).

Almost surely, 2^49989521505 is an apocalyptic number.

It is an amenable number.

49989521505 is a deficient number, since it is larger than the sum of its proper divisors (49729837983).

49989521505 is a wasteful number, since it uses less digits than its factorization.

49989521505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43280997.

The product of its (nonzero) digits is 5832000, while the sum is 57.

The spelling of 49989521505 in words is "forty-nine billion, nine hundred eighty-nine million, five hundred twenty-one thousand, five hundred five".