7228722287158 has 8 divisors (see below), whose sum is σ = 10845512994528. Its totient is φ = 3613551288984.

The previous prime is 7228722287141. The next prime is 7228722287251. The reversal of 7228722287158 is 8517822278227.

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

It is a super-2 number, since 2×7228722287158² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7228722287096 and 7228722287105.

It is a congruent number.

It is an unprimeable number.

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, 404916141 + ... + 404933992.

It is an arithmetic number, because the mean of its divisors is an integer number (1355689124316).

Almost surely, 2^{7228722287158} is an apocalyptic number.

7228722287158 is a deficient number, since it is larger than the sum of its proper divisors (3616790707370).

7228722287158 is a wasteful number, since it uses less digits than its factorization.

7228722287158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809854598.

The product of its digits is 28098560, while the sum is 61.

The spelling of 7228722287158 in words is "seven trillion, two hundred twenty-eight billion, seven hundred twenty-two million, two hundred eighty-seven thousand, one hundred fifty-eight".