427218253806 has 48 divisors (see below), whose sum is σ = 908685183744. Its totient is φ = 133876987776.

The previous prime is 427218253799. The next prime is 427218253843. The reversal of 427218253806 is 608352812724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1391611 + ... + 1670633.

It is an arithmetic number, because the mean of its divisors is an integer number (18930941328).

Almost surely, 2^427218253806 is an apocalyptic number.

427218253806 is an abundant number, since it is smaller than the sum of its proper divisors (481466929938).

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

427218253806 is a wasteful number, since it uses less digits than its factorization.

427218253806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279945 (or 279928 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 427218253806 in words is "four hundred twenty-seven billion, two hundred eighteen million, two hundred fifty-three thousand, eight hundred six".