27808307418 has 16 divisors (see below), whose sum is σ = 55715407776. Its totient is φ = 9252970320.

The previous prime is 27808307411. The next prime is 27808307459. The reversal of 27808307418 is 81470380872.

It is a happy number.

It is a super-2 number, since 2×27808307418² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27808307411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4112713 + ... + 4119468.

It is an arithmetic number, because the mean of its divisors is an integer number (3482212986).

Almost surely, 2^27808307418 is an apocalyptic number.

27808307418 is an abundant number, since it is smaller than the sum of its proper divisors (27907100358).

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

27808307418 is a wasteful number, since it uses less digits than its factorization.

27808307418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8232749.

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 27808307418 in words is "twenty-seven billion, eight hundred eight million, three hundred seven thousand, four hundred eighteen".