2047086721 has 2 divisors, whose sum is σ = 2047086722. Its totient is φ = 2047086720.

The previous prime is 2047086719. The next prime is 2047086737. The reversal of 2047086721 is 1276807402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2037258496 + 9828225 = 45136^2 + 3135^2 .

It is a cyclic number.

It is not a de Polignac number, because 2047086721 - 2¹ = 2047086719 is a prime.

Together with 2047086719, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2047086751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023543360 + 1023543361.

It is an arithmetic number, because the mean of its divisors is an integer number (1023543361).

Almost surely, 2^2047086721 is an apocalyptic number.

It is an amenable number.

2047086721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047086721 is an equidigital number, since it uses as much as digits as its factorization.

2047086721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 2047086721 is about 45244.7424680482. The cubic root of 2047086721 is about 1269.7320452730.

The spelling of 2047086721 in words is "two billion, forty-seven million, eighty-six thousand, seven hundred twenty-one".