50261397731 has 2 divisors, whose sum is σ = 50261397732. Its totient is φ = 50261397730.

The previous prime is 50261397721. The next prime is 50261397757. The reversal of 50261397731 is 13779316205.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50261397731 - 2¹⁰ = 50261396707 is a prime.

It is a super-2 number, since 2×50261397731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50261397721) 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, 25130698865 + 25130698866.

It is an arithmetic number, because the mean of its divisors is an integer number (25130698866).

Almost surely, 2^50261397731 is an apocalyptic number.

50261397731 is a deficient number, since it is larger than the sum of its proper divisors (1).

50261397731 is an equidigital number, since it uses as much as digits as its factorization.

50261397731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 50261397731 in words is "fifty billion, two hundred sixty-one million, three hundred ninety-seven thousand, seven hundred thirty-one".