49784621591 has 2 divisors, whose sum is σ = 49784621592. Its totient is φ = 49784621590.

The previous prime is 49784621569. The next prime is 49784621629. The reversal of 49784621591 is 19512648794.

49784621591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49784621591 - 2²² = 49780427287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49784621561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24892310795 + 24892310796.

It is an arithmetic number, because the mean of its divisors is an integer number (24892310796).

Almost surely, 2^49784621591 is an apocalyptic number.

49784621591 is a deficient number, since it is larger than the sum of its proper divisors (1).

49784621591 is an equidigital number, since it uses as much as digits as its factorization.

49784621591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 56.

The spelling of 49784621591 in words is "forty-nine billion, seven hundred eighty-four million, six hundred twenty-one thousand, five hundred ninety-one".