220405671653472 has 36 divisors (see below), whose sum is σ = 626778628765380. Its totient is φ = 73468557217728.

The previous prime is 220405671653449. The next prime is 220405671653477. The reversal of 220405671653472 is 274356176504022.

220405671653472 is a `hidden beast` number, since 2 + 2 + 0 + 4 + 0 + 5 + 6 + 7 + 165 + 3 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×220405671653472² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220405671653477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 382648735222 + ... + 382648735797.

It is an arithmetic number, because the mean of its divisors is an integer number (17410517465705).

Almost surely, 2^{220405671653472} is an apocalyptic number.

It is an amenable number.

220405671653472 is an abundant number, since it is smaller than the sum of its proper divisors (406372957111908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220405671653472 is a wasteful number, since it uses less digits than its factorization.

220405671653472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765297471035 (or 765297471024 counting only the distinct ones).

The product of its (nonzero) digits is 16934400, while the sum is 54.

The spelling of 220405671653472 in words is "two hundred twenty trillion, four hundred five billion, six hundred seventy-one million, six hundred fifty-three thousand, four hundred seventy-two".