7228721429365 has 32 divisors (see below), whose sum is σ = 9196338382560. Its totient is φ = 5445077299200.

The previous prime is 7228721429299. The next prime is 7228721429417. The reversal of 7228721429365 is 5639241278227.

It can be written as a sum of positive squares in 16 ways, for example, as 6012505065681 + 1216216363684 = 2452041^2 + 1102822^2 .

It is not a de Polignac number, because 7228721429365 - 2³³ = 7220131494773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13875495 + ... + 14387035.

It is an arithmetic number, because the mean of its divisors is an integer number (287385574455).

Almost surely, 2^{7228721429365} is an apocalyptic number.

It is an amenable number.

7228721429365 is a deficient number, since it is larger than the sum of its proper divisors (1967616953195).

7228721429365 is a wasteful number, since it uses less digits than its factorization.

7228721429365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513993.

The product of its digits is 20321280, while the sum is 58.

The spelling of 7228721429365 in words is "seven trillion, two hundred twenty-eight billion, seven hundred twenty-one million, four hundred twenty-nine thousand, three hundred sixty-five".