2685538221330 has 64 divisors (see below), whose sum is σ = 6653787205248. Its totient is φ = 693177937920.

The previous prime is 2685538221313. The next prime is 2685538221341. The reversal of 2685538221330 is 331228355862.

It is a self number, because there is not a number n which added to its sum of digits gives 2685538221330.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6053656 + ... + 6482115.

It is an arithmetic number, because the mean of its divisors is an integer number (103965425082).

Almost surely, 2^{2685538221330} is an apocalyptic number.

2685538221330 is an abundant number, since it is smaller than the sum of its proper divisors (3968248983918).

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

2685538221330 is a wasteful number, since it uses less digits than its factorization.

2685538221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12536011.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 2685538221330 in words is "two trillion, six hundred eighty-five billion, five hundred thirty-eight million, two hundred twenty-one thousand, three hundred thirty".