505716881051 has 2 divisors, whose sum is σ = 505716881052. Its totient is φ = 505716881050.

The previous prime is 505716881039. The next prime is 505716881101. The reversal of 505716881051 is 150188617505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505716881051 - 2²² = 505712686747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505716880987 and 505716881005.

It is not a weakly prime, because it can be changed into another prime (505716887051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252858440525 + 252858440526.

It is an arithmetic number, because the mean of its divisors is an integer number (252858440526).

Almost surely, 2^505716881051 is an apocalyptic number.

505716881051 is a deficient number, since it is larger than the sum of its proper divisors (1).

505716881051 is an equidigital number, since it uses as much as digits as its factorization.

505716881051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336000, while the sum is 47.

The spelling of 505716881051 in words is "five hundred five billion, seven hundred sixteen million, eight hundred eighty-one thousand, fifty-one".