2009455257619 has 2 divisors, whose sum is σ = 2009455257620. Its totient is φ = 2009455257618.

The previous prime is 2009455257577. The next prime is 2009455257643. The reversal of 2009455257619 is 9167525549002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2009455257619 - 2¹⁹ = 2009454733331 is a prime.

It is a super-2 number, since 2×2009455257619² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2009455257619.

It is not a weakly prime, because it can be changed into another prime (2009455257119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004727628809 + 1004727628810.

It is an arithmetic number, because the mean of its divisors is an integer number (1004727628810).

Almost surely, 2^{2009455257619} is an apocalyptic number.

2009455257619 is a deficient number, since it is larger than the sum of its proper divisors (1).

2009455257619 is an equidigital number, since it uses as much as digits as its factorization.

2009455257619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 2009455257619 in words is "two trillion, nine billion, four hundred fifty-five million, two hundred fifty-seven thousand, six hundred nineteen".