819544112664 has 32 divisors (see below), whose sum is σ = 2119510638000. Its totient is φ = 263761323392.

The previous prime is 819544112657. The next prime is 819544112669. The reversal of 819544112664 is 466211445918.

819544112664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819544112669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588752259 + ... + 588753650.

Almost surely, 2^819544112664 is an apocalyptic number.

It is an amenable number.

819544112664 is an abundant number, since it is smaller than the sum of its proper divisors (1299966525336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

819544112664 is a wasteful number, since it uses less digits than its factorization.

819544112664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177505947 (or 1177505943 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The spelling of 819544112664 in words is "eight hundred nineteen billion, five hundred forty-four million, one hundred twelve thousand, six hundred sixty-four".