12603151566 has 24 divisors (see below), whose sum is σ = 28044852264. Its totient is φ = 4087508400.

The previous prime is 12603151549. The next prime is 12603151621. The reversal of 12603151566 is 66515130621.

12603151566 is a `hidden beast` number, since 1 + 2 + 60 + 31 + 5 + 1 + 566 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12603151566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9461160 + ... + 9462491.

It is an arithmetic number, because the mean of its divisors is an integer number (1168535511).

Almost surely, 2^12603151566 is an apocalyptic number.

12603151566 is an abundant number, since it is smaller than the sum of its proper divisors (15441700698).

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

12603151566 is a wasteful number, since it uses less digits than its factorization.

12603151566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18923696 (or 18923693 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 12603151566 in words is "twelve billion, six hundred three million, one hundred fifty-one thousand, five hundred sixty-six".