11637611442 has 16 divisors (see below), whose sum is σ = 25861358880. Its totient is φ = 3879203796.

The previous prime is 11637611437. The next prime is 11637611539. The reversal of 11637611442 is 24411673611.

11637611442 is a `hidden beast` number, since 1 + 1 + 6 + 37 + 611 + 4 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11637611397 and 11637611406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107755608 + ... + 107755715.

It is an arithmetic number, because the mean of its divisors is an integer number (1616334930).

Almost surely, 2^11637611442 is an apocalyptic number.

11637611442 is an abundant number, since it is smaller than the sum of its proper divisors (14223747438).

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

11637611442 is a wasteful number, since it uses less digits than its factorization.

11637611442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215511334 (or 215511328 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The spelling of 11637611442 in words is "eleven billion, six hundred thirty-seven million, six hundred eleven thousand, four hundred forty-two".