72386305818 has 16 divisors (see below), whose sum is σ = 144783295776. Its totient is φ = 24126987920.

The previous prime is 72386305807. The next prime is 72386305829. The reversal of 72386305818 is 81850368327.

It is an interprime number because it is at equal distance from previous prime (72386305807) and next prime (72386305829).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355713 + ... + 520868.

It is an arithmetic number, because the mean of its divisors is an integer number (9048955986).

Almost surely, 2^72386305818 is an apocalyptic number.

72386305818 is an abundant number, since it is smaller than the sum of its proper divisors (72396989958).

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

72386305818 is a wasteful number, since it uses less digits than its factorization.

72386305818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890349.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 72386305818 in words is "seventy-two billion, three hundred eighty-six million, three hundred five thousand, eight hundred eighteen".