49657633168 has 80 divisors (see below), whose sum is σ = 114719282496. Its totient is φ = 20524331520.

The previous prime is 49657633139. The next prime is 49657633169. The reversal of 49657633168 is 86133675694.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (49657633169) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 8671 + ... + 315262.

Almost surely, 2^49657633168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49657633168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57359641248).

49657633168 is an abundant number, since it is smaller than the sum of its proper divisors (65061649328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49657633168 is a wasteful number, since it uses less digits than its factorization.

49657633168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324032 (or 324026 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 58.

The spelling of 49657633168 in words is "forty-nine billion, six hundred fifty-seven million, six hundred thirty-three thousand, one hundred sixty-eight".