7865872873 has 2 divisors, whose sum is σ = 7865872874. Its totient is φ = 7865872872.

The previous prime is 7865872849. The next prime is 7865872901. The reversal of 7865872873 is 3782785687.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4622912064 + 3242960809 = 67992^2 + 56947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7865872873 is a prime.

It is not a weakly prime, because it can be changed into another prime (7865572873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3932936436 + 3932936437.

It is an arithmetic number, because the mean of its divisors is an integer number (3932936437).

Almost surely, 2^7865872873 is an apocalyptic number.

It is an amenable number.

7865872873 is a deficient number, since it is larger than the sum of its proper divisors (1).

7865872873 is an equidigital number, since it uses as much as digits as its factorization.

7865872873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31610880, while the sum is 61.

The square root of 7865872873 is about 88689.7563025178. The cubic root of 7865872873 is about 1988.7596854270.

The spelling of 7865872873 in words is "seven billion, eight hundred sixty-five million, eight hundred seventy-two thousand, eight hundred seventy-three".