10011603521 has 8 divisors (see below), whose sum is σ = 10052799144. Its totient is φ = 9970444800.

The previous prime is 10011603463. The next prime is 10011603529. The reversal of 10011603521 is 12530611001.

It can be written as a sum of positive squares in 4 ways, for example, as 5063887921 + 4947715600 = 71161^2 + 70340^2 .

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 10011603521 - 2¹⁴ = 10011587137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011603493 and 10011603502.

It is not an unprimeable number, because it can be changed into a prime (10011603529) 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, 621671 + ... + 637571.

It is an arithmetic number, because the mean of its divisors is an integer number (1256599893).

Almost surely, 2^10011603521 is an apocalyptic number.

It is an amenable number.

10011603521 is a deficient number, since it is larger than the sum of its proper divisors (41195623).

10011603521 is a wasteful number, since it uses less digits than its factorization.

10011603521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18451.

The product of its (nonzero) digits is 180, while the sum is 20.

The spelling of 10011603521 in words is "ten billion, eleven million, six hundred three thousand, five hundred twenty-one".