49668113521 has 8 divisors (see below), whose sum is σ = 53506603304. Its totient is φ = 45832176000.

The previous prime is 49668113519. The next prime is 49668113543. The reversal of 49668113521 is 12531186694.

It can be written as a sum of positive squares in 4 ways, for example, as 1063738225 + 48604375296 = 32615^2 + 220464^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49668113521 - 2¹ = 49668113519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49668113591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597546 + ... + 675571.

It is an arithmetic number, because the mean of its divisors is an integer number (6688325413).

Almost surely, 2^49668113521 is an apocalyptic number.

It is an amenable number.

49668113521 is a deficient number, since it is larger than the sum of its proper divisors (3838489783).

49668113521 is a wasteful number, since it uses less digits than its factorization.

49668113521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276131.

The product of its digits is 311040, while the sum is 46.

The spelling of 49668113521 in words is "forty-nine billion, six hundred sixty-eight million, one hundred thirteen thousand, five hundred twenty-one".