2681992504809 has 12 divisors (see below), whose sum is σ = 3874907888436. Its totient is φ = 1787570980992.

The previous prime is 2681992504753. The next prime is 2681992504811. The reversal of 2681992504809 is 9084052991862.

2681992504809 is a `hidden beast` number, since 2 + 6 + 8 + 19 + 92 + 50 + 480 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2302511864409 + 379480640400 = 1517403^2 + 616020^2 .

It is not a de Polignac number, because 2681992504809 - 2¹² = 2681992500713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2681992504859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35295124 + ... + 35371029.

It is an arithmetic number, because the mean of its divisors is an integer number (322908990703).

Almost surely, 2^{2681992504809} is an apocalyptic number.

It is an amenable number.

2681992504809 is a deficient number, since it is larger than the sum of its proper divisors (1192915383627).

2681992504809 is a wasteful number, since it uses less digits than its factorization.

2681992504809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70670376 (or 70670373 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 63.

The spelling of 2681992504809 in words is "two trillion, six hundred eighty-one billion, nine hundred ninety-two million, five hundred four thousand, eight hundred nine".