21454635334 has 8 divisors (see below), whose sum is σ = 35107585128. Its totient is φ = 9752106960.

The previous prime is 21454635331. The next prime is 21454635343. The reversal of 21454635334 is 43353645412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21454635331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487605327 + ... + 487605370.

It is an arithmetic number, because the mean of its divisors is an integer number (4388448141).

Almost surely, 2^21454635334 is an apocalyptic number.

21454635334 is a deficient number, since it is larger than the sum of its proper divisors (13652949794).

21454635334 is a wasteful number, since it uses less digits than its factorization.

21454635334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975210710.

The product of its digits is 518400, while the sum is 40.

The spelling of 21454635334 in words is "twenty-one billion, four hundred fifty-four million, six hundred thirty-five thousand, three hundred thirty-four".