816027574840 has 128 divisors (see below), whose sum is σ = 1899910958400. Its totient is φ = 315200471040.

The previous prime is 816027574807. The next prime is 816027574853. The reversal of 816027574840 is 48475720618.

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, 146527576 + ... + 146533144.

Almost surely, 2^816027574840 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 816027574840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949955479200).

816027574840 is an abundant number, since it is smaller than the sum of its proper divisors (1083883383560).

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

816027574840 is a wasteful number, since it uses less digits than its factorization.

816027574840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6345 (or 6341 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 816027574840 in words is "eight hundred sixteen billion, twenty-seven million, five hundred seventy-four thousand, eight hundred forty".