18663070545 has 64 divisors (see below), whose sum is σ = 37940797440. Its totient is φ = 8526700224.

The previous prime is 18663070519. The next prime is 18663070561. The reversal of 18663070545 is 54507036681.

18663070545 is a `hidden beast` number, since 1 + 8 + 6 + 6 + 30 + 70 + 545 = 666.

It is not a de Polignac number, because 18663070545 - 2⁵ = 18663070513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18663070545.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1967484 + ... + 1976946.

It is an arithmetic number, because the mean of its divisors is an integer number (592824960).

Almost surely, 2^18663070545 is an apocalyptic number.

18663070545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18663070545 is an abundant number, since it is smaller than the sum of its proper divisors (19277726895).

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

18663070545 is a wasteful number, since it uses less digits than its factorization.

18663070545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11571 (or 11565 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 18663070545 in words is "eighteen billion, six hundred sixty-three million, seventy thousand, five hundred forty-five".