2165222400364 has 12 divisors (see below), whose sum is σ = 3789266022864. Its totient is φ = 1082574965264.

The previous prime is 2165222400359. The next prime is 2165222400379. The reversal of 2165222400364 is 4630042225612.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8924059 + ... + 9163474.

It is an arithmetic number, because the mean of its divisors is an integer number (315772168572).

Almost surely, 2^{2165222400364} is an apocalyptic number.

It is an amenable number.

2165222400364 is a deficient number, since it is larger than the sum of its proper divisors (1624043622500).

2165222400364 is a wasteful number, since it uses less digits than its factorization.

2165222400364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18117464 (or 18117462 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 2165222400364 its reverse (4630042225612), we get a palindrome (6795264625976).

The spelling of 2165222400364 in words is "two trillion, one hundred sixty-five billion, two hundred twenty-two million, four hundred thousand, three hundred sixty-four".