21138573288514 has 32 divisors (see below), whose sum is σ = 34849193112000. Its totient is φ = 9536652095040.

The previous prime is 21138573288509. The next prime is 21138573288529. The reversal of 21138573288514 is 41588237583112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1817392 + ... + 6751300.

It is an arithmetic number, because the mean of its divisors is an integer number (1089037284750).

Almost surely, 2^{21138573288514} is an apocalyptic number.

21138573288514 is a deficient number, since it is larger than the sum of its proper divisors (13710619823486).

21138573288514 is a wasteful number, since it uses less digits than its factorization.

21138573288514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4935378.

The product of its digits is 12902400, while the sum is 58.

The spelling of 21138573288514 in words is "twenty-one trillion, one hundred thirty-eight billion, five hundred seventy-three million, two hundred eighty-eight thousand, five hundred fourteen".