66318342918 has 32 divisors (see below), whose sum is σ = 133160306400. Its totient is φ = 22018995456.

The previous prime is 66318342913. The next prime is 66318342943. The reversal of 66318342918 is 81924381366.

66318342918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×66318342918³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66318342911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1792228 + ... + 1828856.

It is an arithmetic number, because the mean of its divisors is an integer number (4161259575).

Almost surely, 2^66318342918 is an apocalyptic number.

66318342918 is an abundant number, since it is smaller than the sum of its proper divisors (66841963482).

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

66318342918 is a wasteful number, since it uses less digits than its factorization.

66318342918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37816.

The product of its digits is 1492992, while the sum is 51.

The spelling of 66318342918 in words is "sixty-six billion, three hundred eighteen million, three hundred forty-two thousand, nine hundred eighteen".