7447221163 has 4 divisors (see below), whose sum is σ = 7520956128. Its totient is φ = 7373486200.

The previous prime is 7447221151. The next prime is 7447221167. The reversal of 7447221163 is 3611227447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3611227447 = 23 ⋅157009889.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7447221163 is a prime.

It is a super-2 number, since 2×7447221163² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7447221167) 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, 36867331 + ... + 36867532.

It is an arithmetic number, because the mean of its divisors is an integer number (1880239032).

Almost surely, 2^7447221163 is an apocalyptic number.

7447221163 is a deficient number, since it is larger than the sum of its proper divisors (73734965).

7447221163 is a wasteful number, since it uses less digits than its factorization.

7447221163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73734964.

The product of its digits is 56448, while the sum is 37.

The square root of 7447221163 is about 86297.2836362768. The cubic root of 7447221163 is about 1952.8314040530.

The spelling of 7447221163 in words is "seven billion, four hundred forty-seven million, two hundred twenty-one thousand, one hundred sixty-three".