427188383440 has 80 divisors (see below), whose sum is σ = 1222416010368. Its totient is φ = 135198079488.

The previous prime is 427188383431. The next prime is 427188383449. The reversal of 427188383440 is 44383881724.

It is an interprime number because it is at equal distance from previous prime (427188383431) and next prime (427188383449).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427188383449) 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, 29332582 + ... + 29347141.

Almost surely, 2^427188383440 is an apocalyptic number.

427188383440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

427188383440 is an abundant number, since it is smaller than the sum of its proper divisors (795227626928).

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

427188383440 is a wasteful number, since it uses less digits than its factorization.

427188383440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58679756 (or 58679750 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 52.

The spelling of 427188383440 in words is "four hundred twenty-seven billion, one hundred eighty-eight million, three hundred eighty-three thousand, four hundred forty".