7228722287157 has 8 divisors (see below), whose sum is σ = 11015195866176. Its totient is φ = 4130698449792.

The previous prime is 7228722287141. The next prime is 7228722287251. The reversal of 7228722287157 is 7517822278227.

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

It is not a de Polignac number, because 7228722287157 - 2⁴ = 7228722287141 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 7228722287157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228722287057) 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 7 ways as a sum of consecutive naturals, for example, 172112435388 + ... + 172112435429.

It is an arithmetic number, because the mean of its divisors is an integer number (1376899483272).

Almost surely, 2^{7228722287157} is an apocalyptic number.

It is an amenable number.

7228722287157 is a deficient number, since it is larger than the sum of its proper divisors (3786473579019).

7228722287157 is a wasteful number, since it uses less digits than its factorization.

7228722287157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344224870827.

The product of its digits is 24586240, while the sum is 60.

The spelling of 7228722287157 in words is "seven trillion, two hundred twenty-eight billion, seven hundred twenty-two million, two hundred eighty-seven thousand, one hundred fifty-seven".