50640553091 has 2 divisors, whose sum is σ = 50640553092. Its totient is φ = 50640553090.

The previous prime is 50640553039. The next prime is 50640553121. The reversal of 50640553091 is 19035504605.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50640553091 - 2⁶ = 50640553027 is a prime.

It is not a weakly prime, because it can be changed into another prime (50640553291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25320276545 + 25320276546.

It is an arithmetic number, because the mean of its divisors is an integer number (25320276546).

Almost surely, 2^50640553091 is an apocalyptic number.

50640553091 is a deficient number, since it is larger than the sum of its proper divisors (1).

50640553091 is an equidigital number, since it uses as much as digits as its factorization.

50640553091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 50640553091 in words is "fifty billion, six hundred forty million, five hundred fifty-three thousand, ninety-one".