418686336642 has 64 divisors (see below), whose sum is σ = 967161968640. Its totient is φ = 118354853376.

The previous prime is 418686336631. The next prime is 418686336689. The reversal of 418686336642 is 246633686814.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14892723 + ... + 14920809.

It is an arithmetic number, because the mean of its divisors is an integer number (15111905760).

Almost surely, 2^418686336642 is an apocalyptic number.

418686336642 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 418686336642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483580984320).

418686336642 is an abundant number, since it is smaller than the sum of its proper divisors (548475631998).

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

418686336642 is a wasteful number, since it uses less digits than its factorization.

418686336642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31855.

The product of its digits is 23887872, while the sum is 57.

The spelling of 418686336642 in words is "four hundred eighteen billion, six hundred eighty-six million, three hundred thirty-six thousand, six hundred forty-two".