2229396786665 has 8 divisors (see below), whose sum is σ = 2675284537608. Its totient is φ = 1783511833600.

The previous prime is 2229396786649. The next prime is 2229396786709. The reversal of 2229396786665 is 5666876939222.

It can be written as a sum of positive squares in 4 ways, for example, as 846333761296 + 1383063025369 = 919964^2 + 1176037^2 .

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

It is not a de Polignac number, because 2229396786665 - 2⁴ = 2229396786649 is a prime.

It is a Duffinian number.

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, 2002139 + ... + 2909871.

It is an arithmetic number, because the mean of its divisors is an integer number (334410567201).

Almost surely, 2^{2229396786665} is an apocalyptic number.

It is an amenable number.

2229396786665 is a deficient number, since it is larger than the sum of its proper divisors (445887750943).

2229396786665 is an equidigital number, since it uses as much as digits as its factorization.

2229396786665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398939.

The product of its digits is 705438720, while the sum is 71.

The spelling of 2229396786665 in words is "two trillion, two hundred twenty-nine billion, three hundred ninety-six million, seven hundred eighty-six thousand, six hundred sixty-five".