7081213673 has 2 divisors, whose sum is σ = 7081213674. Its totient is φ = 7081213672.

The previous prime is 7081213663. The next prime is 7081213697. The reversal of 7081213673 is 3763121807.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3930412249 + 3150801424 = 62693^2 + 56132^2 .

It is an emirp because it is prime and its reverse (3763121807) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7081213673 - 2³² = 2786246377 is a prime.

It is not a weakly prime, because it can be changed into another prime (7081213663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3540606836 + 3540606837.

It is an arithmetic number, because the mean of its divisors is an integer number (3540606837).

Almost surely, 2^7081213673 is an apocalyptic number.

It is an amenable number.

7081213673 is a deficient number, since it is larger than the sum of its proper divisors (1).

7081213673 is an equidigital number, since it uses as much as digits as its factorization.

7081213673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 7081213673 is about 84149.9475519741. The cubic root of 7081213673 is about 1920.3006684263.

The spelling of 7081213673 in words is "seven billion, eighty-one million, two hundred thirteen thousand, six hundred seventy-three".