502040249869 has 2 divisors, whose sum is σ = 502040249870. Its totient is φ = 502040249868.

The previous prime is 502040249861. The next prime is 502040249903. The reversal of 502040249869 is 968942040205.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500468523844 + 1571726025 = 707438^2 + 39645^2 .

It is a cyclic number.

It is not a de Polignac number, because 502040249869 - 2³ = 502040249861 is a prime.

It is a super-2 number, since 2×502040249869² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (502040249861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251020124934 + 251020124935.

It is an arithmetic number, because the mean of its divisors is an integer number (251020124935).

Almost surely, 2^502040249869 is an apocalyptic number.

It is an amenable number.

502040249869 is a deficient number, since it is larger than the sum of its proper divisors (1).

502040249869 is an equidigital number, since it uses as much as digits as its factorization.

502040249869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 502040249869 in words is "five hundred two billion, forty million, two hundred forty-nine thousand, eight hundred sixty-nine".