220206661654 has 8 divisors (see below), whose sum is σ = 377497134288. Its totient is φ = 94374283560.

The previous prime is 220206661651. The next prime is 220206661657. The reversal of 220206661654 is 456166602022.

It is an interprime number because it is at equal distance from previous prime (220206661651) and next prime (220206661657).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220206661651) 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, 7864523617 + ... + 7864523644.

It is an arithmetic number, because the mean of its divisors is an integer number (47187141786).

Almost surely, 2^220206661654 is an apocalyptic number.

220206661654 is a deficient number, since it is larger than the sum of its proper divisors (157290472634).

220206661654 is a wasteful number, since it uses less digits than its factorization.

220206661654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15729047270.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 220206661654 in words is "two hundred twenty billion, two hundred six million, six hundred sixty-one thousand, six hundred fifty-four".