5815209680 has 80 divisors (see below), whose sum is σ = 15471509760. Its totient is φ = 1991248896.

The previous prime is 5815209667. The next prime is 5815209683. The reversal of 5815209680 is 869025185.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5815209683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463652 + ... + 476028.

It is an arithmetic number, because the mean of its divisors is an integer number (193393872).

Almost surely, 2^5815209680 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 5815209680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7735754880).

5815209680 is an abundant number, since it is smaller than the sum of its proper divisors (9656300080).

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

5815209680 is a wasteful number, since it uses less digits than its factorization.

5815209680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13236 (or 13230 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 44.

The square root of 5815209680 is about 76257.5221207718. The cubic root of 5815209680 is about 1798.2709404399.

The spelling of 5815209680 in words is "five billion, eight hundred fifteen million, two hundred nine thousand, six hundred eighty".