11557533442 has 64 divisors (see below), whose sum is σ = 22303701504. Its totient is φ = 4365757440.

The previous prime is 11557533409. The next prime is 11557533443. The reversal of 11557533442 is 24433575511.

It is a junction number, because it is equal to n+sod(n) for n = 11557533395 and 11557533404.

It is not an unprimeable number, because it can be changed into a prime (11557533443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2764858 + ... + 2769034.

It is an arithmetic number, because the mean of its divisors is an integer number (348495336).

Almost surely, 2^11557533442 is an apocalyptic number.

11557533442 is a deficient number, since it is larger than the sum of its proper divisors (10746168062).

11557533442 is a wasteful number, since it uses less digits than its factorization.

11557533442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4883.

The product of its digits is 252000, while the sum is 40.

The spelling of 11557533442 in words is "eleven billion, five hundred fifty-seven million, five hundred thirty-three thousand, four hundred forty-two".