50250504991861 has 2 divisors, whose sum is σ = 50250504991862. Its totient is φ = 50250504991860.

The previous prime is 50250504991789. The next prime is 50250504991891. The reversal of 50250504991861 is 16819940505205.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28352962562500 + 21897542429361 = 5324750^2 + 4679481^2 .

It is a cyclic number.

It is not a de Polignac number, because 50250504991861 - 2¹³ = 50250504983669 is a prime.

It is a super-2 number, since 2×50250504991861² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50250504991891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25125252495930 + 25125252495931.

It is an arithmetic number, because the mean of its divisors is an integer number (25125252495931).

Almost surely, 2^{50250504991861} is an apocalyptic number.

It is an amenable number.

50250504991861 is a deficient number, since it is larger than the sum of its proper divisors (1).

50250504991861 is an equidigital number, since it uses as much as digits as its factorization.

50250504991861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888000, while the sum is 55.

The spelling of 50250504991861 in words is "fifty trillion, two hundred fifty billion, five hundred four million, nine hundred ninety-one thousand, eight hundred sixty-one".