794640042636 has 96 divisors (see below), whose sum is σ = 2044265862912. Its totient is φ = 238236733440.

The previous prime is 794640042631. The next prime is 794640042659. The reversal of 794640042636 is 636240046497.

It is a super-3 number, since 3×794640042636³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (794640042631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45407040 + ... + 45424536.

It is an arithmetic number, because the mean of its divisors is an integer number (21294436072).

Almost surely, 2^794640042636 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 794640042636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1022132931456).

794640042636 is an abundant number, since it is smaller than the sum of its proper divisors (1249625820276).

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

794640042636 is a wasteful number, since it uses less digits than its factorization.

794640042636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21159 (or 21157 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 51.

The spelling of 794640042636 in words is "seven hundred ninety-four billion, six hundred forty million, forty-two thousand, six hundred thirty-six".