12617017800 has 48 divisors (see below), whose sum is σ = 39112757040. Its totient is φ = 3364537920.

The previous prime is 12617017799. The next prime is 12617017801. The reversal of 12617017800 is 871071621.

It is an interprime number because it is at equal distance from previous prime (12617017799) and next prime (12617017801).

It is not an unprimeable number, because it can be changed into a prime (12617017801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10513582 + ... + 10514781.

It is an arithmetic number, because the mean of its divisors is an integer number (814849105).

Almost surely, 2^12617017800 is an apocalyptic number.

12617017800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12617017800 is an abundant number, since it is smaller than the sum of its proper divisors (26495739240).

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

12617017800 is a wasteful number, since it uses less digits than its factorization.

12617017800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21028382 (or 21028373 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 33.

The spelling of 12617017800 in words is "twelve billion, six hundred seventeen million, seventeen thousand, eight hundred".