11155551042 has 32 divisors (see below), whose sum is σ = 22492103040. Its totient is φ = 3688450560.

The previous prime is 11155551031. The next prime is 11155551151. The reversal of 11155551042 is 24015555111.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443442 + ... + 467922.

It is an arithmetic number, because the mean of its divisors is an integer number (702878220).

Almost surely, 2^11155551042 is an apocalyptic number.

11155551042 is an abundant number, since it is smaller than the sum of its proper divisors (11336551998).

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

11155551042 is a wasteful number, since it uses less digits than its factorization.

11155551042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25098.

The product of its (nonzero) digits is 5000, while the sum is 30.

The spelling of 11155551042 in words is "eleven billion, one hundred fifty-five million, five hundred fifty-one thousand, forty-two".