6221640615465 has 64 divisors (see below), whose sum is σ = 11507868288000. Its totient is φ = 2838607084800.

The previous prime is 6221640615383. The next prime is 6221640615469. The reversal of 6221640615465 is 5645160461226.

It is a happy number.

It is not a de Polignac number, because 6221640615465 - 2¹⁴ = 6221640599081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6221640615469) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6192531 + ... + 7126760.

It is an arithmetic number, because the mean of its divisors is an integer number (179810442000).

Almost surely, 2^{6221640615465} is an apocalyptic number.

It is an amenable number.

6221640615465 is a deficient number, since it is larger than the sum of its proper divisors (5286227672535).

6221640615465 is a wasteful number, since it uses less digits than its factorization.

6221640615465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13319478.

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 6221640615465 in words is "six trillion, two hundred twenty-one billion, six hundred forty million, six hundred fifteen thousand, four hundred sixty-five".