7564221236552 has 8 divisors (see below), whose sum is σ = 14182914818550. Its totient is φ = 3782110618272.

The previous prime is 7564221236549. The next prime is 7564221236573. The reversal of 7564221236552 is 2556321224657.

It can be written as a sum of positive squares in only one way, i.e., 5631859907716 + 1932361328836 = 2373154^2 + 1390094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 7564221236552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472763827277 + ... + 472763827292.

Almost surely, 2^{7564221236552} is an apocalyptic number.

It is an amenable number.

7564221236552 is a deficient number, since it is larger than the sum of its proper divisors (6618693581998).

7564221236552 is a wasteful number, since it uses less digits than its factorization.

7564221236552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945527654575 (or 945527654571 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 50.

The spelling of 7564221236552 in words is "seven trillion, five hundred sixty-four billion, two hundred twenty-one million, two hundred thirty-six thousand, five hundred fifty-two".