50698381709 has 2 divisors, whose sum is σ = 50698381710. Its totient is φ = 50698381708.

The previous prime is 50698381697. The next prime is 50698381717. The reversal of 50698381709 is 90718389605.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42012700900 + 8685680809 = 204970^2 + 93197^2 .

It is a cyclic number.

It is not a de Polignac number, because 50698381709 - 2⁸ = 50698381453 is a prime.

It is a super-2 number, since 2×50698381709² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50698381609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25349190854 + 25349190855.

It is an arithmetic number, because the mean of its divisors is an integer number (25349190855).

Almost surely, 2^50698381709 is an apocalyptic number.

It is an amenable number.

50698381709 is a deficient number, since it is larger than the sum of its proper divisors (1).

50698381709 is an equidigital number, since it uses as much as digits as its factorization.

50698381709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 50698381709 in words is "fifty billion, six hundred ninety-eight million, three hundred eighty-one thousand, seven hundred nine".