2172661662764 has 12 divisors (see below), whose sum is σ = 3802198182384. Its totient is φ = 1086319324944.

The previous prime is 2172661662761. The next prime is 2172661662779. The reversal of 2172661662764 is 4672661662712.

It is not an unprimeable number, because it can be changed into a prime (2172661662761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2444552 + ... + 3212655.

It is an arithmetic number, because the mean of its divisors is an integer number (316849848532).

Almost surely, 2^{2172661662764} is an apocalyptic number.

It is an amenable number.

2172661662764 is a deficient number, since it is larger than the sum of its proper divisors (1629536519620).

2172661662764 is a wasteful number, since it uses less digits than its factorization.

2172661662764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5753224 (or 5753222 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 56.

The spelling of 2172661662764 in words is "two trillion, one hundred seventy-two billion, six hundred sixty-one million, six hundred sixty-two thousand, seven hundred sixty-four".