11520242452431 has 24 divisors (see below), whose sum is σ = 17215690873680. Its totient is φ = 7414667035776.

The previous prime is 11520242452429. The next prime is 11520242452457. The reversal of 11520242452431 is 13425424202511.

11520242452431 is a `hidden beast` number, since 1 + 1 + 5 + 202 + 424 + 5 + 24 + 3 + 1 = 666.

It is not a de Polignac number, because 11520242452431 - 2¹ = 11520242452429 is a prime.

It is a super-2 number, since 2×11520242452431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520242452231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 971475 + ... + 4897371.

It is an arithmetic number, because the mean of its divisors is an integer number (717320453070).

Almost surely, 2^{11520242452431} is an apocalyptic number.

11520242452431 is a deficient number, since it is larger than the sum of its proper divisors (5695448421249).

11520242452431 is a wasteful number, since it uses less digits than its factorization.

11520242452431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937175 (or 3937172 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 11520242452431 its reverse (13425424202511), we get a palindrome (24945666654942).

The spelling of 11520242452431 in words is "eleven trillion, five hundred twenty billion, two hundred forty-two million, four hundred fifty-two thousand, four hundred thirty-one".