9521223579904 has 27 divisors (see below), whose sum is σ = 19005353428593. Its totient is φ = 4760587104768.

The previous prime is 9521223579827. The next prime is 9521223579953. The reversal of 9521223579904 is 4099753221259.

The square root of 9521223579904 is 3085648.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 6970022406400 + 2551201173504 = 2640080^2 + 1597248^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 49273942 + ... + 49466794.

Almost surely, 2^{9521223579904} is an apocalyptic number.

9521223579904 is the 3085648-th square number.

It is an amenable number.

9521223579904 is a deficient number, since it is larger than the sum of its proper divisors (9484129848689).

9521223579904 is an frugal number, since it uses more digits than its factorization.

9521223579904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385722 (or 192855 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 58.

The spelling of 9521223579904 in words is "nine trillion, five hundred twenty-one billion, two hundred twenty-three million, five hundred seventy-nine thousand, nine hundred four".