21342654455 has 8 divisors (see below), whose sum is σ = 25619686800. Its totient is φ = 17068455936.

The previous prime is 21342654449. The next prime is 21342654479. The reversal of 21342654455 is 55445624312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21342654455 is a prime.

It is a super-4 number, since 4×21342654455⁴ (a number of 42 digits) contains 4444 as substring.

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, 691850 + ... + 722039.

It is an arithmetic number, because the mean of its divisors is an integer number (3202460850).

Almost surely, 2^21342654455 is an apocalyptic number.

21342654455 is a deficient number, since it is larger than the sum of its proper divisors (4277032345).

21342654455 is a wasteful number, since it uses less digits than its factorization.

21342654455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416913.

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

The spelling of 21342654455 in words is "twenty-one billion, three hundred forty-two million, six hundred fifty-four thousand, four hundred fifty-five".