11156661342 has 12 divisors (see below), whose sum is σ = 24172766280. Its totient is φ = 3718887108.

The previous prime is 11156661317. The next prime is 11156661379. The reversal of 11156661342 is 24316665111.

It is a junction number, because it is equal to n+sod(n) for n = 11156661297 and 11156661306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 309907242 + ... + 309907277.

It is an arithmetic number, because the mean of its divisors is an integer number (2014397190).

Almost surely, 2^11156661342 is an apocalyptic number.

11156661342 is an abundant number, since it is smaller than the sum of its proper divisors (13016104938).

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

11156661342 is a wasteful number, since it uses less digits than its factorization.

11156661342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619814527 (or 619814524 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The spelling of 11156661342 in words is "eleven billion, one hundred fifty-six million, six hundred sixty-one thousand, three hundred forty-two".