19045860445897 has 16 divisors (see below), whose sum is σ = 19371885096960. Its totient is φ = 18721670476032.

The previous prime is 19045860445889. The next prime is 19045860445903. The reversal of 19045860445897 is 79854406854091.

It is a cyclic number.

It is not a de Polignac number, because 19045860445897 - 2³ = 19045860445889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19045860446897) 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, 36619693 + ... + 37136149.

It is an arithmetic number, because the mean of its divisors is an integer number (1210742818560).

Almost surely, 2^{19045860445897} is an apocalyptic number.

It is an amenable number.

19045860445897 is a deficient number, since it is larger than the sum of its proper divisors (326024651063).

19045860445897 is a wasteful number, since it uses less digits than its factorization.

19045860445897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518232.

The product of its (nonzero) digits is 348364800, while the sum is 70.

The spelling of 19045860445897 in words is "nineteen trillion, forty-five billion, eight hundred sixty million, four hundred forty-five thousand, eight hundred ninety-seven".