7229428722865 has 8 divisors (see below), whose sum is σ = 8817532737768. Its totient is φ = 5688730798080.

The previous prime is 7229428722809. The next prime is 7229428722877. The reversal of 7229428722865 is 5682278249227.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 127166412816 + 7102262310049 = 356604^2 + 2665007^2 .

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

It is not a de Polignac number, because 7229428722865 - 2¹¹ = 7229428720817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7229428722797 and 7229428722806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11851522192 + ... + 11851522801.

It is an arithmetic number, because the mean of its divisors is an integer number (1102191592221).

Almost surely, 2^{7229428722865} is an apocalyptic number.

It is an amenable number.

7229428722865 is a deficient number, since it is larger than the sum of its proper divisors (1588104014903).

7229428722865 is a wasteful number, since it uses less digits than its factorization.

7229428722865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23703045059.

The product of its digits is 108380160, while the sum is 64.

The spelling of 7229428722865 in words is "seven trillion, two hundred twenty-nine billion, four hundred twenty-eight million, seven hundred twenty-two thousand, eight hundred sixty-five".