503042373455749 has 2 divisors, whose sum is σ = 503042373455750. Its totient is φ = 503042373455748.

The previous prime is 503042373455681. The next prime is 503042373455759. The reversal of 503042373455749 is 947554373240305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336950335426849 + 166092038028900 = 18356207^2 + 12887670^2 .

It is a cyclic number.

It is not a de Polignac number, because 503042373455749 - 2¹³ = 503042373447557 is a prime.

It is a super-2 number, since 2×503042373455749² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503042373455759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251521186727874 + 251521186727875.

It is an arithmetic number, because the mean of its divisors is an integer number (251521186727875).

Almost surely, 2^{503042373455749} is an apocalyptic number.

It is an amenable number.

503042373455749 is a deficient number, since it is larger than the sum of its proper divisors (1).

503042373455749 is an equidigital number, since it uses as much as digits as its factorization.

503042373455749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512000, while the sum is 61.

The spelling of 503042373455749 in words is "five hundred three trillion, forty-two billion, three hundred seventy-three million, four hundred fifty-five thousand, seven hundred forty-nine".