505765542739 has 2 divisors, whose sum is σ = 505765542740. Its totient is φ = 505765542738.

The previous prime is 505765542701. The next prime is 505765542749. The reversal of 505765542739 is 937245567505.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505765542739 is a prime.

It is not a weakly prime, because it can be changed into another prime (505765542749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252882771369 + 252882771370.

It is an arithmetic number, because the mean of its divisors is an integer number (252882771370).

Almost surely, 2^505765542739 is an apocalyptic number.

505765542739 is a deficient number, since it is larger than the sum of its proper divisors (1).

505765542739 is an equidigital number, since it uses as much as digits as its factorization.

505765542739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690000, while the sum is 58.

The spelling of 505765542739 in words is "five hundred five billion, seven hundred sixty-five million, five hundred forty-two thousand, seven hundred thirty-nine".