21601622560627 has 8 divisors (see below), whose sum is σ = 21684128675840. Its totient is φ = 21519159933960.

The previous prime is 21601622560543. The next prime is 21601622560643. The reversal of 21601622560627 is 72606522610612.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21601622560627 - 2³¹ = 21599475076979 is a prime.

It is a super-3 number, since 3×21601622560627³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21601622567627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9876627 + ... + 11863852.

It is an arithmetic number, because the mean of its divisors is an integer number (2710516084480).

Almost surely, 2^{21601622560627} is an apocalyptic number.

21601622560627 is a deficient number, since it is larger than the sum of its proper divisors (82506115213).

21601622560627 is a wasteful number, since it uses less digits than its factorization.

21601622560627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21744273.

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 21601622560627 in words is "twenty-one trillion, six hundred one billion, six hundred twenty-two million, five hundred sixty thousand, six hundred twenty-seven".