502561560091 has 2 divisors, whose sum is σ = 502561560092. Its totient is φ = 502561560090.

The previous prime is 502561560029. The next prime is 502561560103. The reversal of 502561560091 is 190065165205.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 502561560091 - 2¹¹ = 502561558043 is a prime.

It is not a weakly prime, because it can be changed into another prime (502561560691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251280780045 + 251280780046.

It is an arithmetic number, because the mean of its divisors is an integer number (251280780046).

Almost surely, 2^502561560091 is an apocalyptic number.

502561560091 is a deficient number, since it is larger than the sum of its proper divisors (1).

502561560091 is an equidigital number, since it uses as much as digits as its factorization.

502561560091 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 40.

The spelling of 502561560091 in words is "five hundred two billion, five hundred sixty-one million, five hundred sixty thousand, ninety-one".