21254143588 has 12 divisors (see below), whose sum is σ = 37205430192. Its totient is φ = 10624020680.

The previous prime is 21254143571. The next prime is 21254143619. The reversal of 21254143588 is 88534145212.

It is an unprimeable number.

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, 747070 + ... + 774997.

It is an arithmetic number, because the mean of its divisors is an integer number (3100452516).

Almost surely, 2^21254143588 is an apocalyptic number.

It is an amenable number.

21254143588 is a deficient number, since it is larger than the sum of its proper divisors (15951286604).

21254143588 is a wasteful number, since it uses less digits than its factorization.

21254143588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525562 (or 1525560 counting only the distinct ones).

The product of its digits is 307200, while the sum is 43.

The spelling of 21254143588 in words is "twenty-one billion, two hundred fifty-four million, one hundred forty-three thousand, five hundred eighty-eight".