7216909315 has 32 divisors (see below), whose sum is σ = 10802359296. Its totient is φ = 4496722560.

The previous prime is 7216909279. The next prime is 7216909363. The reversal of 7216909315 is 5139096127.

It is a de Polignac number, because none of the positive numbers 2^k-7216909315 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1330549 + ... + 1335961.

It is an arithmetic number, because the mean of its divisors is an integer number (337573728).

Almost surely, 2^7216909315 is an apocalyptic number.

7216909315 is a deficient number, since it is larger than the sum of its proper divisors (3585449981).

7216909315 is a wasteful number, since it uses less digits than its factorization.

7216909315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 7216909315 is about 84952.3944041603. The cubic root of 7216909315 is about 1932.4892322060.

The spelling of 7216909315 in words is "seven billion, two hundred sixteen million, nine hundred nine thousand, three hundred fifteen".