49686364909 has 2 divisors, whose sum is σ = 49686364910. Its totient is φ = 49686364908.

The previous prime is 49686364867. The next prime is 49686364913. The reversal of 49686364909 is 90946368694.

49686364909 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., 42629860900 + 7056504009 = 206470^2 + 84003^2 .

It is a cyclic number.

It is not a de Polignac number, because 49686364909 - 2⁹ = 49686364397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49686364939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24843182454 + 24843182455.

It is an arithmetic number, because the mean of its divisors is an integer number (24843182455).

Almost surely, 2^49686364909 is an apocalyptic number.

It is an amenable number.

49686364909 is a deficient number, since it is larger than the sum of its proper divisors (1).

49686364909 is an equidigital number, since it uses as much as digits as its factorization.

49686364909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60466176, while the sum is 64.

The spelling of 49686364909 in words is "forty-nine billion, six hundred eighty-six million, three hundred sixty-four thousand, nine hundred nine".