1605899450613 has 16 divisors (see below), whose sum is σ = 2177855124480. Its totient is φ = 1052391106416.

The previous prime is 1605899450587. The next prime is 1605899450627. The reversal of 1605899450613 is 3160549985061.

It is not a de Polignac number, because 1605899450613 - 2⁵ = 1605899450581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1605899450513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14871195 + ... + 14978792.

It is an arithmetic number, because the mean of its divisors is an integer number (136115945280).

Almost surely, 2^{1605899450613} is an apocalyptic number.

It is an amenable number.

1605899450613 is a deficient number, since it is larger than the sum of its proper divisors (571955673867).

1605899450613 is a wasteful number, since it uses less digits than its factorization.

1605899450613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29850296.

The product of its (nonzero) digits is 6998400, while the sum is 57.

The spelling of 1605899450613 in words is "one trillion, six hundred five billion, eight hundred ninety-nine million, four hundred fifty thousand, six hundred thirteen".