49391271976 has 72 divisors (see below), whose sum is σ = 96987722490. Its totient is φ = 23571912000.

The previous prime is 49391271899. The next prime is 49391272001. The reversal of 49391271976 is 67917219394.

49391271976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37742387076 + 11648884900 = 194274^2 + 107930^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 49391271976.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 196777851 + ... + 196778101.

Almost surely, 2^49391271976 is an apocalyptic number.

It is an amenable number.

49391271976 is a deficient number, since it is larger than the sum of its proper divisors (47596450514).

49391271976 is an equidigital number, since it uses as much as digits as its factorization.

49391271976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 349 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 58.

The spelling of 49391271976 in words is "forty-nine billion, three hundred ninety-one million, two hundred seventy-one thousand, nine hundred seventy-six".