7215038545 has 16 divisors (see below), whose sum is σ = 10171691712. Its totient is φ = 4843661760.

The previous prime is 7215038513. The next prime is 7215038563. The reversal of 7215038545 is 5458305127.

It is not a de Polignac number, because 7215038545 - 2⁵ = 7215038513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7215038498 and 7215038507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5044767 + ... + 5046196.

It is an arithmetic number, because the mean of its divisors is an integer number (635730732).

Almost surely, 2^7215038545 is an apocalyptic number.

It is an amenable number.

7215038545 is a deficient number, since it is larger than the sum of its proper divisors (2956653167).

7215038545 is a wasteful number, since it uses less digits than its factorization.

7215038545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10090992.

The product of its (nonzero) digits is 168000, while the sum is 40.

The square root of 7215038545 is about 84941.3829943921. The cubic root of 7215038545 is about 1932.3222375758.

The spelling of 7215038545 in words is "seven billion, two hundred fifteen million, thirty-eight thousand, five hundred forty-five".