2685579961320 has 48 divisors (see below), whose sum is σ = 8728134875460. Its totient is φ = 716154656256.

The previous prime is 2685579961303. The next prime is 2685579961333. The reversal of 2685579961320 is 231699755862.

2685579961320 is a `hidden beast` number, since 2 + 6 + 8 + 5 + 5 + 7 + 9 + 9 + 613 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2680351803684 + 5228157636 = 1637178^2 + 72306^2 .

It is a super-2 number, since 2×2685579961320² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3729971809 + ... + 3729972528.

Almost surely, 2^{2685579961320} is an apocalyptic number.

2685579961320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2685579961320 is an abundant number, since it is smaller than the sum of its proper divisors (6042554914140).

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

2685579961320 is a wasteful number, since it uses less digits than its factorization.

2685579961320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7459944354 (or 7459944347 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 63.

The spelling of 2685579961320 in words is "two trillion, six hundred eighty-five billion, five hundred seventy-nine million, nine hundred sixty-one thousand, three hundred twenty".