21602474713252 has 6 divisors (see below), whose sum is σ = 37804330748198. Its totient is φ = 10801237356624.

The previous prime is 21602474713229. The next prime is 21602474713297. The reversal of 21602474713252 is 25231747420612.

It can be written as a sum of positive squares in only one way, i.e., 16931793010276 + 4670681702976 = 4114826^2 + 2161176^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2700309339153 + ... + 2700309339160.

Almost surely, 2^{21602474713252} is an apocalyptic number.

It is an amenable number.

21602474713252 is a deficient number, since it is larger than the sum of its proper divisors (16201856034946).

21602474713252 is a wasteful number, since it uses less digits than its factorization.

21602474713252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5400618678317 (or 5400618678315 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 21602474713252 in words is "twenty-one trillion, six hundred two billion, four hundred seventy-four million, seven hundred thirteen thousand, two hundred fifty-two".