427644500436750 has 128 divisors (see below), whose sum is σ = 1073991718425600. Its totient is φ = 113334417475200.

The previous prime is 427644500436743. The next prime is 427644500436773. The reversal of 427644500436750 is 57634005446724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4052412487 + ... + 4052518013.

It is an arithmetic number, because the mean of its divisors is an integer number (8390560300200).

Almost surely, 2^{427644500436750} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427644500436750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536995859212800).

427644500436750 is an abundant number, since it is smaller than the sum of its proper divisors (646347217988850).

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

427644500436750 is a wasteful number, since it uses less digits than its factorization.

427644500436750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138859 (or 138849 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 57.

The spelling of 427644500436750 in words is "four hundred twenty-seven trillion, six hundred forty-four billion, five hundred million, four hundred thirty-six thousand, seven hundred fifty".