427811783504 has 120 divisors (see below), whose sum is σ = 972448187904. Its totient is φ = 178603084800.

The previous prime is 427811783501. The next prime is 427811783587. The reversal of 427811783504 is 405387118724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427811783501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165113249 + ... + 165115839.

Almost surely, 2^427811783504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427811783504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486224093952).

427811783504 is an abundant number, since it is smaller than the sum of its proper divisors (544636404400).

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

427811783504 is a wasteful number, since it uses less digits than its factorization.

427811783504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565 (or 3518 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 427811783504 in words is "four hundred twenty-seven billion, eight hundred eleven million, seven hundred eighty-three thousand, five hundred four".