7156221369 has 8 divisors (see below), whose sum is σ = 10409049312. Its totient is φ = 4337103840.

The previous prime is 7156221353. The next prime is 7156221419. The reversal of 7156221369 is 9631226517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7156221369 - 2⁴ = 7156221353 is a prime.

It is a super-2 number, since 2×7156221369² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7156221369.

It is not an unprimeable number, because it can be changed into a prime (7156221329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108427564 + ... + 108427629.

It is an arithmetic number, because the mean of its divisors is an integer number (1301131164).

Almost surely, 2^7156221369 is an apocalyptic number.

It is an amenable number.

7156221369 is a deficient number, since it is larger than the sum of its proper divisors (3252827943).

7156221369 is a wasteful number, since it uses less digits than its factorization.

7156221369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216855207.

The product of its digits is 136080, while the sum is 42.

The square root of 7156221369 is about 84594.4523535675. The cubic root of 7156221369 is about 1927.0571245851.

The spelling of 7156221369 in words is "seven billion, one hundred fifty-six million, two hundred twenty-one thousand, three hundred sixty-nine".