19445893227452 has 12 divisors (see below), whose sum is σ = 34035713971896. Its totient is φ = 9721403521200.

The previous prime is 19445893227421. The next prime is 19445893227461. The reversal of 19445893227452 is 25472239854491.

It is a super-2 number, since 2×19445893227452² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385744778 + ... + 385795185.

It is an arithmetic number, because the mean of its divisors is an integer number (2836309497658).

Almost surely, 2^{19445893227452} is an apocalyptic number.

It is an amenable number.

19445893227452 is a deficient number, since it is larger than the sum of its proper divisors (14589820744444).

19445893227452 is a wasteful number, since it uses less digits than its factorization.

19445893227452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771546268 (or 771546266 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 65.

The spelling of 19445893227452 in words is "nineteen trillion, four hundred forty-five billion, eight hundred ninety-three million, two hundred twenty-seven thousand, four hundred fifty-two".