50130856381 has 2 divisors, whose sum is σ = 50130856382. Its totient is φ = 50130856380.

The previous prime is 50130856357. The next prime is 50130856387. The reversal of 50130856381 is 18365803105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35885240356 + 14245616025 = 189434^2 + 119355^2 .

It is a cyclic number.

It is not a de Polignac number, because 50130856381 - 2⁷ = 50130856253 is a prime.

It is a super-2 number, since 2×50130856381² (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 (50130856387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25065428190 + 25065428191.

It is an arithmetic number, because the mean of its divisors is an integer number (25065428191).

Almost surely, 2^50130856381 is an apocalyptic number.

It is an amenable number.

50130856381 is a deficient number, since it is larger than the sum of its proper divisors (1).

50130856381 is an equidigital number, since it uses as much as digits as its factorization.

50130856381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 50130856381 in words is "fifty billion, one hundred thirty million, eight hundred fifty-six thousand, three hundred eighty-one".