50994746849 has 2 divisors, whose sum is σ = 50994746850. Its totient is φ = 50994746848.

The previous prime is 50994746839. The next prime is 50994746897. The reversal of 50994746849 is 94864749905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50589006400 + 405740449 = 224920^2 + 20143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50994746849 is a prime.

It is not a weakly prime, because it can be changed into another prime (50994746819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25497373424 + 25497373425.

It is an arithmetic number, because the mean of its divisors is an integer number (25497373425).

Almost surely, 2^50994746849 is an apocalyptic number.

It is an amenable number.

50994746849 is a deficient number, since it is larger than the sum of its proper divisors (1).

50994746849 is an equidigital number, since it uses as much as digits as its factorization.

50994746849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 65.

The spelling of 50994746849 in words is "fifty billion, nine hundred ninety-four million, seven hundred forty-six thousand, eight hundred forty-nine".