2509389388819 has 2 divisors, whose sum is σ = 2509389388820. Its totient is φ = 2509389388818.

The previous prime is 2509389388757. The next prime is 2509389388843. The reversal of 2509389388819 is 9188839839052.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2509389388819 - 2¹¹ = 2509389386771 is a prime.

It is a super-2 number, since 2×2509389388819² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2509389388859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1254694694409 + 1254694694410.

It is an arithmetic number, because the mean of its divisors is an integer number (1254694694410).

Almost surely, 2^{2509389388819} is an apocalyptic number.

2509389388819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2509389388819 is an equidigital number, since it uses as much as digits as its factorization.

2509389388819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268738560, while the sum is 73.

The spelling of 2509389388819 in words is "two trillion, five hundred nine billion, three hundred eighty-nine million, three hundred eighty-eight thousand, eight hundred nineteen".