2081512040243 has 4 divisors (see below), whose sum is σ = 2083642555080. Its totient is φ = 2079381525408.

The previous prime is 2081512040239. The next prime is 2081512040269. The reversal of 2081512040243 is 3420402151802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2081512040243 - 2² = 2081512040239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2081512040273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065255953 + ... + 1065257906.

It is an arithmetic number, because the mean of its divisors is an integer number (520910638770).

Almost surely, 2^{2081512040243} is an apocalyptic number.

2081512040243 is a deficient number, since it is larger than the sum of its proper divisors (2130514837).

2081512040243 is an equidigital number, since it uses as much as digits as its factorization.

2081512040243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130514836.

The product of its (nonzero) digits is 15360, while the sum is 32.

The spelling of 2081512040243 in words is "two trillion, eighty-one billion, five hundred twelve million, forty thousand, two hundred forty-three".