21025536602 has 32 divisors (see below), whose sum is σ = 37032234240. Its totient is φ = 8764018560.

The previous prime is 21025536601. The next prime is 21025536617. The reversal of 21025536602 is 20663552012.

It is not an unprimeable number, because it can be changed into a prime (21025536601) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1688174 + ... + 1700582.

It is an arithmetic number, because the mean of its divisors is an integer number (1157257320).

Almost surely, 2^21025536602 is an apocalyptic number.

21025536602 is a deficient number, since it is larger than the sum of its proper divisors (16006697638).

21025536602 is a wasteful number, since it uses less digits than its factorization.

21025536602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15726.

The product of its (nonzero) digits is 21600, while the sum is 32.

The spelling of 21025536602 in words is "twenty-one billion, twenty-five million, five hundred thirty-six thousand, six hundred two".