2684381781000 has 128 divisors (see below), whose sum is σ = 8664073891200. Its totient is φ = 691151148800.

The previous prime is 2684381780947. The next prime is 2684381781061. The reversal of 2684381781000 is 1871834862.

It is a super-2 number, since 2×2684381781000² (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 31 ways as a sum of consecutive naturals, for example, 15340482 + ... + 15514481.

It is an arithmetic number, because the mean of its divisors is an integer number (67688077275).

Almost surely, 2^{2684381781000} is an apocalyptic number.

2684381781000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2684381781000 is an abundant number, since it is smaller than the sum of its proper divisors (5979692110200).

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

2684381781000 is a wasteful number, since it uses less digits than its factorization.

2684381781000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30855016 (or 30855002 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 2684381781000 in words is "two trillion, six hundred eighty-four billion, three hundred eighty-one million, seven hundred eighty-one thousand".