11520403401 has 16 divisors (see below), whose sum is σ = 16551495296. Its totient is φ = 7085460096.

The previous prime is 11520403397. The next prime is 11520403421. The reversal of 11520403401 is 10430402511.

It is not a de Polignac number, because 11520403401 - 2² = 11520403397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11520403421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13300 + ... + 152373.

It is an arithmetic number, because the mean of its divisors is an integer number (1034468456).

Almost surely, 2^11520403401 is an apocalyptic number.

It is an amenable number.

11520403401 is a deficient number, since it is larger than the sum of its proper divisors (5031091895).

11520403401 is a wasteful number, since it uses less digits than its factorization.

11520403401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167472.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 11520403401 its reverse (10430402511), we get a palindrome (21950805912).

The spelling of 11520403401 in words is "eleven billion, five hundred twenty million, four hundred three thousand, four hundred one".