679736832040 has 128 divisors (see below), whose sum is σ = 1762712985600. Its totient is φ = 231079080960.

The previous prime is 679736832037. The next prime is 679736832053. The reversal of 679736832040 is 40238637976.

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, 72146530 + ... + 72155950.

It is an arithmetic number, because the mean of its divisors is an integer number (13771195200).

Almost surely, 2^679736832040 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 679736832040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (881356492800).

679736832040 is an abundant number, since it is smaller than the sum of its proper divisors (1082976153560).

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

679736832040 is a wasteful number, since it uses less digits than its factorization.

679736832040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11595 (or 11591 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 55.

The spelling of 679736832040 in words is "six hundred seventy-nine billion, seven hundred thirty-six million, eight hundred thirty-two thousand, forty".