49173021916 has 6 divisors (see below), whose sum is σ = 86052788360. Its totient is φ = 24586510956.

The previous prime is 49173021889. The next prime is 49173021929. The reversal of 49173021916 is 61912037194.

It is a super-2 number, since 2×49173021916² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6146627736 + ... + 6146627743.

Almost surely, 2^49173021916 is an apocalyptic number.

It is an amenable number.

49173021916 is a deficient number, since it is larger than the sum of its proper divisors (36879766444).

49173021916 is a wasteful number, since it uses less digits than its factorization.

49173021916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12293255483 (or 12293255481 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 49173021916 in words is "forty-nine billion, one hundred seventy-three million, twenty-one thousand, nine hundred sixteen".