961680764580 has 96 divisors (see below), whose sum is σ = 2855708472960. Its totient is φ = 240972933120.

The previous prime is 961680764573. The next prime is 961680764591. The reversal of 961680764580 is 85467086169.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 130191 + ... + 1392950.

It is an arithmetic number, because the mean of its divisors is an integer number (29746963260).

Almost surely, 2^961680764580 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 961680764580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1427854236480).

961680764580 is an abundant number, since it is smaller than the sum of its proper divisors (1894027708380).

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

961680764580 is a wasteful number, since it uses less digits than its factorization.

961680764580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523789 (or 1523787 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 961680764580 in words is "nine hundred sixty-one billion, six hundred eighty million, seven hundred sixty-four thousand, five hundred eighty".