49686364817 has 2 divisors, whose sum is σ = 49686364818. Its totient is φ = 49686364816.

The previous prime is 49686364807. The next prime is 49686364867. The reversal of 49686364817 is 71846368694.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46214680576 + 3471684241 = 214976^2 + 58921^2 .

It is a cyclic number.

It is not a de Polignac number, because 49686364817 - 2⁴ = 49686364801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49686364817.

It is not a weakly prime, because it can be changed into another prime (49686364807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24843182408 + 24843182409.

It is an arithmetic number, because the mean of its divisors is an integer number (24843182409).

Almost surely, 2^49686364817 is an apocalyptic number.

It is an amenable number.

49686364817 is a deficient number, since it is larger than the sum of its proper divisors (1).

49686364817 is an equidigital number, since it uses as much as digits as its factorization.

49686364817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41803776, while the sum is 62.

The spelling of 49686364817 in words is "forty-nine billion, six hundred eighty-six million, three hundred sixty-four thousand, eight hundred seventeen".