2731640022047 has 4 divisors (see below), whose sum is σ = 2731671442920. Its totient is φ = 2731608601176.

The previous prime is 2731640021927. The next prime is 2731640022071. The reversal of 2731640022047 is 7402200461372.

It is a happy number.

2731640022047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2731640022047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2731640022047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731640025047) 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, 15579668 + ... + 15754025.

It is an arithmetic number, because the mean of its divisors is an integer number (682917860730).

Almost surely, 2^{2731640022047} is an apocalyptic number.

2731640022047 is a deficient number, since it is larger than the sum of its proper divisors (31420873).

2731640022047 is an equidigital number, since it uses as much as digits as its factorization.

2731640022047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31420872.

The product of its (nonzero) digits is 112896, while the sum is 38.

The spelling of 2731640022047 in words is "two trillion, seven hundred thirty-one billion, six hundred forty million, twenty-two thousand, forty-seven".