21336655045 has 8 divisors (see below), whose sum is σ = 26429921280. Its totient is φ = 16518700560.

The previous prime is 21336655013. The next prime is 21336655063. The reversal of 21336655045 is 54055663312.

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

It is not a de Polignac number, because 21336655045 - 2⁵ = 21336655013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21336654989 and 21336655007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68827765 + ... + 68828074.

It is an arithmetic number, because the mean of its divisors is an integer number (3303740160).

Almost surely, 2^21336655045 is an apocalyptic number.

It is an amenable number.

21336655045 is a deficient number, since it is larger than the sum of its proper divisors (5093266235).

21336655045 is a wasteful number, since it uses less digits than its factorization.

21336655045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137655875.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 21336655045 in words is "twenty-one billion, three hundred thirty-six million, six hundred fifty-five thousand, forty-five".