7215007873 has 4 divisors (see below), whose sum is σ = 7227175428. Its totient is φ = 7202840320.

The previous prime is 7215007853. The next prime is 7215007939. The reversal of 7215007873 is 3787005127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3787005127 = 7151 ⋅529577.

It can be written as a sum of positive squares in 2 ways, for example, as 3608164624 + 3606843249 = 60068^2 + 60057^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7215007873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7215007853) 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, 6082888 + ... + 6084073.

It is an arithmetic number, because the mean of its divisors is an integer number (1806793857).

Almost surely, 2^7215007873 is an apocalyptic number.

It is an amenable number.

7215007873 is a deficient number, since it is larger than the sum of its proper divisors (12167555).

7215007873 is a wasteful number, since it uses less digits than its factorization.

7215007873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12167554.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 7215007873 is about 84941.2024461627. The cubic root of 7215007873 is about 1932.3194993935.

The spelling of 7215007873 in words is "seven billion, two hundred fifteen million, seven thousand, eight hundred seventy-three".