50586721907 has 2 divisors, whose sum is σ = 50586721908. Its totient is φ = 50586721906.

The previous prime is 50586721897. The next prime is 50586722023. The reversal of 50586721907 is 70912768505.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50586721907 is a prime.

It is not a weakly prime, because it can be changed into another prime (50586721307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25293360953 + 25293360954.

It is an arithmetic number, because the mean of its divisors is an integer number (25293360954).

Almost surely, 2^50586721907 is an apocalyptic number.

50586721907 is a deficient number, since it is larger than the sum of its proper divisors (1).

50586721907 is an equidigital number, since it uses as much as digits as its factorization.

50586721907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 50586721907 in words is "fifty billion, five hundred eighty-six million, seven hundred twenty-one thousand, nine hundred seven".