12617780142 has 32 divisors (see below), whose sum is σ = 27573421824. Its totient is φ = 3817497600.

The previous prime is 12617780113. The next prime is 12617780221. The reversal of 12617780142 is 24108771621.

It is a self number, because there is not a number n which added to its sum of digits gives 12617780142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109843 + ... + 193134.

It is an arithmetic number, because the mean of its divisors is an integer number (861669432).

Almost surely, 2^12617780142 is an apocalyptic number.

12617780142 is an abundant number, since it is smaller than the sum of its proper divisors (14955641682).

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

12617780142 is a wasteful number, since it uses less digits than its factorization.

12617780142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303624.

The product of its (nonzero) digits is 37632, while the sum is 39.

The spelling of 12617780142 in words is "twelve billion, six hundred seventeen million, seven hundred eighty thousand, one hundred forty-two".