7157215073 has 2 divisors, whose sum is σ = 7157215074. Its totient is φ = 7157215072.

The previous prime is 7157215063. The next prime is 7157215103. The reversal of 7157215073 is 3705127517.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5098959649 + 2058255424 = 71407^2 + 45368^2 .

It is a cyclic number.

It is not a de Polignac number, because 7157215073 - 2⁴ = 7157215057 is a prime.

It is not a weakly prime, because it can be changed into another prime (7157215063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578607536 + 3578607537.

It is an arithmetic number, because the mean of its divisors is an integer number (3578607537).

Almost surely, 2^7157215073 is an apocalyptic number.

It is an amenable number.

7157215073 is a deficient number, since it is larger than the sum of its proper divisors (1).

7157215073 is an equidigital number, since it uses as much as digits as its factorization.

7157215073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51450, while the sum is 38.

The square root of 7157215073 is about 84600.3254899176. The cubic root of 7157215073 is about 1927.1463167088.

The spelling of 7157215073 in words is "seven billion, one hundred fifty-seven million, two hundred fifteen thousand, seventy-three".