21342654454 has 96 divisors (see below), whose sum is σ = 39548113920. Its totient is φ = 8583294720.

The previous prime is 21342654449. The next prime is 21342654479. The reversal of 21342654454 is 45445624312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5580787 + ... + 5584609.

It is an arithmetic number, because the mean of its divisors is an integer number (411959520).

Almost surely, 2^21342654454 is an apocalyptic number.

21342654454 is a deficient number, since it is larger than the sum of its proper divisors (18205459466).

21342654454 is a wasteful number, since it uses less digits than its factorization.

21342654454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3946 (or 3935 counting only the distinct ones).

The product of its digits is 460800, while the sum is 40.

The spelling of 21342654454 in words is "twenty-one billion, three hundred forty-two million, six hundred fifty-four thousand, four hundred fifty-four".