12617718036 has 144 divisors (see below), whose sum is σ = 38993106432. Its totient is φ = 3084480000.

The previous prime is 12617718023. The next prime is 12617718049. The reversal of 12617718036 is 63081771621.

It is an interprime number because it is at equal distance from previous prime (12617718023) and next prime (12617718049).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 243411 + ... + 290661.

Almost surely, 2^12617718036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12617718036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19496553216).

12617718036 is an abundant number, since it is smaller than the sum of its proper divisors (26375388396).

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

12617718036 is a wasteful number, since it uses less digits than its factorization.

12617718036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47310 (or 47291 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 42.

The spelling of 12617718036 in words is "twelve billion, six hundred seventeen million, seven hundred eighteen thousand, thirty-six".