11551233542 has 32 divisors (see below), whose sum is σ = 19032148800. Its totient is φ = 5233650688.

The previous prime is 11551233541. The next prime is 11551233553. The reversal of 11551233542 is 24533215511.

It is a junction number, because it is equal to n+sod(n) for n = 11551233499 and 11551233508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551233541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337658 + ... + 370290.

It is an arithmetic number, because the mean of its divisors is an integer number (594754650).

Almost surely, 2^11551233542 is an apocalyptic number.

11551233542 is a deficient number, since it is larger than the sum of its proper divisors (7480915258).

11551233542 is a wasteful number, since it uses less digits than its factorization.

11551233542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33040.

The product of its digits is 18000, while the sum is 32.

The spelling of 11551233542 in words is "eleven billion, five hundred fifty-one million, two hundred thirty-three thousand, five hundred forty-two".