49995858817 has 2 divisors, whose sum is σ = 49995858818. Its totient is φ = 49995858816.

The previous prime is 49995858797. The next prime is 49995858821. The reversal of 49995858817 is 71885859994.

49995858817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48453254641 + 1542604176 = 220121^2 + 39276^2 .

It is a cyclic number.

It is not a de Polignac number, because 49995858817 - 2³⁵ = 15636120449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49995858817.

It is not a weakly prime, because it can be changed into another prime (49995858217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24997929408 + 24997929409.

It is an arithmetic number, because the mean of its divisors is an integer number (24997929409).

Almost surely, 2^49995858817 is an apocalyptic number.

It is an amenable number.

49995858817 is a deficient number, since it is larger than the sum of its proper divisors (1).

49995858817 is an equidigital number, since it uses as much as digits as its factorization.

49995858817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 261273600, while the sum is 73.

The spelling of 49995858817 in words is "forty-nine billion, nine hundred ninety-five million, eight hundred fifty-eight thousand, eight hundred seventeen".