21458484968 has 16 divisors (see below), whose sum is σ = 40743960000. Its totient is φ = 10593428976.

The previous prime is 21458484941. The next prime is 21458485019. The reversal of 21458484968 is 86948485412.

It is a super-2 number, since 2×21458484968² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16976018 + ... + 16977281.

It is an arithmetic number, because the mean of its divisors is an integer number (2546497500).

Almost surely, 2^21458484968 is an apocalyptic number.

It is an amenable number.

21458484968 is a deficient number, since it is larger than the sum of its proper divisors (19285475032).

21458484968 is a wasteful number, since it uses less digits than its factorization.

21458484968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33953384 (or 33953380 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 59.

The spelling of 21458484968 in words is "twenty-one billion, four hundred fifty-eight million, four hundred eighty-four thousand, nine hundred sixty-eight".