10401323521 has 8 divisors (see below), whose sum is σ = 10581681600. Its totient is φ = 10221101040.

The previous prime is 10401323519. The next prime is 10401323591. The reversal of 10401323521 is 12532310401.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10401323521 - 2¹ = 10401323519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10401323492 and 10401323501.

It is not an unprimeable number, because it can be changed into a prime (10401323591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127435 + ... + 192463.

It is an arithmetic number, because the mean of its divisors is an integer number (1322710200).

Almost surely, 2^10401323521 is an apocalyptic number.

It is an amenable number.

10401323521 is a deficient number, since it is larger than the sum of its proper divisors (180358079).

10401323521 is an equidigital number, since it uses as much as digits as its factorization.

10401323521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67799.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 10401323521 its reverse (12532310401), we get a palindrome (22933633922).

The spelling of 10401323521 in words is "ten billion, four hundred one million, three hundred twenty-three thousand, five hundred twenty-one".