21424654355 has 8 divisors (see below), whose sum is σ = 27687245712. Its totient is φ = 15821283168.

The previous prime is 21424654337. The next prime is 21424654357. The reversal of 21424654355 is 55345642412.

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 21424654355 - 2¹⁰ = 21424653331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21424654357) 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, 164804969 + ... + 164805098.

It is an arithmetic number, because the mean of its divisors is an integer number (3460905714).

Almost surely, 2^21424654355 is an apocalyptic number.

21424654355 is a deficient number, since it is larger than the sum of its proper divisors (6262591357).

21424654355 is a wasteful number, since it uses less digits than its factorization.

21424654355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329610085.

The product of its digits is 576000, while the sum is 41.

The spelling of 21424654355 in words is "twenty-one billion, four hundred twenty-four million, six hundred fifty-four thousand, three hundred fifty-five".