427881666188724 has 96 divisors (see below), whose sum is σ = 1119494200868736. Its totient is φ = 126054768775680.

The previous prime is 427881666188693. The next prime is 427881666188747.

427881666188724 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 427881666188724.

It is a congruent number.

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, 29370319 + ... + 41453334.

It is an arithmetic number, because the mean of its divisors is an integer number (11661397925716).

Almost surely, 2^{427881666188724} is an apocalyptic number.

427881666188724 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

427881666188724 is an abundant number, since it is smaller than the sum of its proper divisors (691612534680012).

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

427881666188724 is a wasteful number, since it uses less digits than its factorization.

427881666188724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70824945 (or 70824943 counting only the distinct ones).

The product of its digits is 2774532096, while the sum is 78.

The spelling of 427881666188724 in words is "four hundred twenty-seven trillion, eight hundred eighty-one billion, six hundred sixty-six million, one hundred eighty-eight thousand, seven hundred twenty-four".