7522221870684 has 72 divisors (see below), whose sum is σ = 20151031603248. Its totient is φ = 2357799805440.

The previous prime is 7522221870619. The next prime is 7522221870689. The reversal of 7522221870684 is 4860781222257.

It is a happy number.

7522221870684 is a `hidden beast` number, since 7 + 522 + 22 + 18 + 7 + 0 + 6 + 84 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 7522221870684.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7522221870689) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4818282 + ... + 6185489.

It is an arithmetic number, because the mean of its divisors is an integer number (279875438934).

Almost surely, 2^{7522221870684} is an apocalyptic number.

It is an amenable number.

7522221870684 is an abundant number, since it is smaller than the sum of its proper divisors (12628809732564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7522221870684 is a wasteful number, since it uses less digits than its factorization.

7522221870684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11004915 (or 11004910 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 54.

The spelling of 7522221870684 in words is "seven trillion, five hundred twenty-two billion, two hundred twenty-one million, eight hundred seventy thousand, six hundred eighty-four".