11501224542 has 12 divisors (see below), whose sum is σ = 24919319880. Its totient is φ = 3833741508.

The previous prime is 11501224513. The next prime is 11501224573. The reversal of 11501224542 is 24542210511.

It is a happy number.

11501224542 is a `hidden beast` number, since 115 + 0 + 1 + 2 + 2 + 4 + 542 = 666.

11501224542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319478442 + ... + 319478477.

It is an arithmetic number, because the mean of its divisors is an integer number (2076609990).

Almost surely, 2^11501224542 is an apocalyptic number.

11501224542 is an abundant number, since it is smaller than the sum of its proper divisors (13418095338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11501224542 is a wasteful number, since it uses less digits than its factorization.

11501224542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638956927 (or 638956924 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The spelling of 11501224542 in words is "eleven billion, five hundred one million, two hundred twenty-four thousand, five hundred forty-two".