7220144365 has 12 divisors (see below), whose sum is σ = 10078732476. Its totient is φ = 4950955968.

The previous prime is 7220144359. The next prime is 7220144387. The reversal of 7220144365 is 5634410227.

It can be written as a sum of positive squares in 2 ways, for example, as 872198089 + 6347946276 = 29533^2 + 79674^2 .

It is not a de Polignac number, because 7220144365 - 2³ = 7220144357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7220144365.

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 11 ways as a sum of consecutive naturals, for example, 14734744 + ... + 14735233.

It is an arithmetic number, because the mean of its divisors is an integer number (839894373).

Almost surely, 2^7220144365 is an apocalyptic number.

It is an amenable number.

7220144365 is a deficient number, since it is larger than the sum of its proper divisors (2858588111).

7220144365 is a wasteful number, since it uses less digits than its factorization.

7220144365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29469996 (or 29469989 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 7220144365 is about 84971.4326406234. The cubic root of 7220144365 is about 1932.7779414545. Note that the first 3 decimals are identical.

The spelling of 7220144365 in words is "seven billion, two hundred twenty million, one hundred forty-four thousand, three hundred sixty-five".