7216260491 has 4 divisors (see below), whose sum is σ = 7872284184. Its totient is φ = 6560236800.

The previous prime is 7216260449. The next prime is 7216260497. The reversal of 7216260491 is 1940626127.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7216260491 is a prime.

It is a super-3 number, since 3×7216260491³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7216260497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328011830 + ... + 328011851.

It is an arithmetic number, because the mean of its divisors is an integer number (1968071046).

Almost surely, 2^7216260491 is an apocalyptic number.

7216260491 is a deficient number, since it is larger than the sum of its proper divisors (656023693).

7216260491 is a wasteful number, since it uses less digits than its factorization.

7216260491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656023692.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 7216260491 is about 84948.5755678104. The cubic root of 7216260491 is about 1932.4313180807.

The spelling of 7216260491 in words is "seven billion, two hundred sixteen million, two hundred sixty thousand, four hundred ninety-one".