220606452621 has 12 divisors (see below), whose sum is σ = 318658549248. Its totient is φ = 147068760264.

The previous prime is 220606452569. The next prime is 220606452659. The reversal of 220606452621 is 126254606022.

220606452621 is a `hidden beast` number, since 2 + 2 + 0 + 6 + 0 + 645 + 2 + 6 + 2 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-220606452621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220606451621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 645556 + ... + 926258.

It is an arithmetic number, because the mean of its divisors is an integer number (26554879104).

Almost surely, 2^220606452621 is an apocalyptic number.

It is an amenable number.

220606452621 is a deficient number, since it is larger than the sum of its proper divisors (98052096627).

220606452621 is a wasteful number, since it uses less digits than its factorization.

220606452621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368032 (or 368029 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 220606452621 in words is "two hundred twenty billion, six hundred six million, four hundred fifty-two thousand, six hundred twenty-one".