213263254564 has 12 divisors (see below), whose sum is σ = 373216850188. Its totient is φ = 106629868800.

The previous prime is 213263254507. The next prime is 213263254583. The reversal of 213263254564 is 465452362312.

It can be written as a sum of positive squares in 2 ways, for example, as 177360584164 + 35902670400 = 421142^2 + 189480^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 213263254564.

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, 144777 + ... + 668944.

Almost surely, 2^213263254564 is an apocalyptic number.

It is an amenable number.

213263254564 is a deficient number, since it is larger than the sum of its proper divisors (159953595624).

213263254564 is a wasteful number, since it uses less digits than its factorization.

213263254564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879246 (or 879244 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 43.

The spelling of 213263254564 in words is "two hundred thirteen billion, two hundred sixty-three million, two hundred fifty-four thousand, five hundred sixty-four".