49505779877 has 2 divisors, whose sum is σ = 49505779878. Its totient is φ = 49505779876.

The previous prime is 49505779861. The next prime is 49505779979. The reversal of 49505779877 is 77897750594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47992103041 + 1513676836 = 219071^2 + 38906^2 .

It is a cyclic number.

It is not a de Polignac number, because 49505779877 - 2⁴ = 49505779861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49505779777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24752889938 + 24752889939.

It is an arithmetic number, because the mean of its divisors is an integer number (24752889939).

Almost surely, 2^49505779877 is an apocalyptic number.

It is an amenable number.

49505779877 is a deficient number, since it is larger than the sum of its proper divisors (1).

49505779877 is an equidigital number, since it uses as much as digits as its factorization.

49505779877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155584800, while the sum is 68.

The spelling of 49505779877 in words is "forty-nine billion, five hundred five million, seven hundred seventy-nine thousand, eight hundred seventy-seven".