11142555636 has 24 divisors (see below), whose sum is σ = 26052261984. Its totient is φ = 3706618720.

The previous prime is 11142555607. The next prime is 11142555637. The reversal of 11142555636 is 63655524111.

It is a super-2 number, since 2×11142555636² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11142555594 and 11142555603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11142555637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939675 + ... + 951458.

It is an arithmetic number, because the mean of its divisors is an integer number (1085510916).

Almost surely, 2^11142555636 is an apocalyptic number.

It is an amenable number.

11142555636 is an abundant number, since it is smaller than the sum of its proper divisors (14909706348).

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

11142555636 is a wasteful number, since it uses less digits than its factorization.

11142555636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891631 (or 1891629 counting only the distinct ones).

The product of its digits is 108000, while the sum is 39.

The spelling of 11142555636 in words is "eleven billion, one hundred forty-two million, five hundred fifty-five thousand, six hundred thirty-six".