11131755642 has 64 divisors (see below), whose sum is σ = 28620230400. Its totient is φ = 3180492864.

The previous prime is 11131755637. The next prime is 11131755643. The reversal of 11131755642 is 24655713111.

11131755642 is a `hidden beast` number, since 1 + 1 + 1 + 3 + 1 + 7 + 5 + 5 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11131755597 and 11131755606.

It is not an unprimeable number, because it can be changed into a prime (11131755643) 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, 151167 + ... + 212402.

It is an arithmetic number, because the mean of its divisors is an integer number (447191100).

Almost surely, 2^11131755642 is an apocalyptic number.

11131755642 is an abundant number, since it is smaller than the sum of its proper divisors (17488474758).

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

11131755642 is an frugal number, since it uses more digits than its factorization.

11131755642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363599 (or 363581 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The spelling of 11131755642 in words is "eleven billion, one hundred thirty-one million, seven hundred fifty-five thousand, six hundred forty-two".