21031499588 has 12 divisors (see below), whose sum is σ = 40151044752. Its totient is φ = 9559772520.

The previous prime is 21031499543. The next prime is 21031499611. The reversal of 21031499588 is 88599413012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238994270 + ... + 238994357.

It is an arithmetic number, because the mean of its divisors is an integer number (3345920396).

Almost surely, 2^21031499588 is an apocalyptic number.

It is an amenable number.

21031499588 is a deficient number, since it is larger than the sum of its proper divisors (19119545164).

21031499588 is a wasteful number, since it uses less digits than its factorization.

21031499588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477988642 (or 477988640 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 21031499588 in words is "twenty-one billion, thirty-one million, four hundred ninety-nine thousand, five hundred eighty-eight".