49844651391 has 6 divisors (see below), whose sum is σ = 71997829800. Its totient is φ = 33229767588.

The previous prime is 49844651387. The next prime is 49844651399. The reversal of 49844651391 is 19315644894.

49844651391 is a `hidden beast` number, since 4 + 9 + 84 + 46 + 513 + 9 + 1 = 666.

It is not a de Polignac number, because 49844651391 - 2² = 49844651387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49844651399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2769147291 + ... + 2769147308.

It is an arithmetic number, because the mean of its divisors is an integer number (11999638300).

Almost surely, 2^49844651391 is an apocalyptic number.

49844651391 is a deficient number, since it is larger than the sum of its proper divisors (22153178409).

49844651391 is a wasteful number, since it uses less digits than its factorization.

49844651391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538294605 (or 5538294602 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 49844651391 in words is "forty-nine billion, eight hundred forty-four million, six hundred fifty-one thousand, three hundred ninety-one".