2681087050640 has 20 divisors (see below), whose sum is σ = 6233527392924. Its totient is φ = 1072434820224.

The previous prime is 2681087050633. The next prime is 2681087050657. The reversal of 2681087050640 is 460507801862.

It can be written as a sum of positive squares in 2 ways, for example, as 421091975056 + 2259995075584 = 648916^2 + 1503328^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16756793987 + ... + 16756794146.

Almost surely, 2^{2681087050640} is an apocalyptic number.

2681087050640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2681087050640 is an abundant number, since it is smaller than the sum of its proper divisors (3552440342284).

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

2681087050640 is a wasteful number, since it uses less digits than its factorization.

2681087050640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33513588146 (or 33513588140 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 2681087050640 in words is "two trillion, six hundred eighty-one billion, eighty-seven million, fifty thousand, six hundred forty".