7228155665157 has 16 divisors (see below), whose sum is σ = 11222150037120. Its totient is φ = 4052443067712.

The previous prime is 7228155665141. The next prime is 7228155665167. The reversal of 7228155665157 is 7515665518227.

7228155665157 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7228155665157 - 2⁴ = 7228155665141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7228155665157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228155665167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3247148782 + ... + 3247151007.

It is an arithmetic number, because the mean of its divisors is an integer number (701384377320).

Almost surely, 2^{7228155665157} is an apocalyptic number.

It is an amenable number.

7228155665157 is a deficient number, since it is larger than the sum of its proper divisors (3993994371963).

7228155665157 is a wasteful number, since it uses less digits than its factorization.

7228155665157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6494299852.

The product of its digits is 35280000, while the sum is 60.

The spelling of 7228155665157 in words is "seven trillion, two hundred twenty-eight billion, one hundred fifty-five million, six hundred sixty-five thousand, one hundred fifty-seven".