9423523575621 has 12 divisors (see below), whose sum is σ = 14412447821772. Its totient is φ = 5912799106176.

The previous prime is 9423523575581. The next prime is 9423523575667. The reversal of 9423523575621 is 1265753253249.

9423523575621 is a `hidden beast` number, since 9 + 4 + 2 + 3 + 5 + 2 + 3 + 5 + 7 + 5 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4307721005025 + 5115802570596 = 2075505^2 + 2261814^2 .

It is not a de Polignac number, because 9423523575621 - 2²⁹ = 9422986704709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9423523475621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30795828526 + ... + 30795828831.

It is an arithmetic number, because the mean of its divisors is an integer number (1201037318481).

Almost surely, 2^{9423523575621} is an apocalyptic number.

It is an amenable number.

9423523575621 is a deficient number, since it is larger than the sum of its proper divisors (4988924246151).

9423523575621 is a wasteful number, since it uses less digits than its factorization.

9423523575621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61591657380 (or 61591657377 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 54.

The spelling of 9423523575621 in words is "nine trillion, four hundred twenty-three billion, five hundred twenty-three million, five hundred seventy-five thousand, six hundred twenty-one".