20606624421 has 8 divisors (see below), whose sum is σ = 27519044544. Its totient is φ = 13715976960.

The previous prime is 20606624407. The next prime is 20606624449. The reversal of 20606624421 is 12442660602.

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

It is not a de Polignac number, because 20606624421 - 2¹¹ = 20606622373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20606624461) 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, 5440956 + ... + 5444741.

It is an arithmetic number, because the mean of its divisors is an integer number (3439880568).

Almost surely, 2^20606624421 is an apocalyptic number.

It is an amenable number.

20606624421 is a deficient number, since it is larger than the sum of its proper divisors (6912420123).

20606624421 is a wasteful number, since it uses less digits than its factorization.

20606624421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10886331.

The product of its (nonzero) digits is 27648, while the sum is 33.

The spelling of 20606624421 in words is "twenty billion, six hundred six million, six hundred twenty-four thousand, four hundred twenty-one".