11660065542 has 24 divisors (see below), whose sum is σ = 25281210240. Its totient is φ = 3883960080.

The previous prime is 11660065541. The next prime is 11660065567. The reversal of 11660065542 is 24556006611.

11660065542 is a `hidden beast` number, since 1 + 1 + 6 + 600 + 6 + 5 + 5 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 11660065497 and 11660065506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11660065541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 200934 + ... + 252377.

It is an arithmetic number, because the mean of its divisors is an integer number (1053383760).

Almost surely, 2^11660065542 is an apocalyptic number.

11660065542 is an abundant number, since it is smaller than the sum of its proper divisors (13621144698).

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

11660065542 is a wasteful number, since it uses less digits than its factorization.

11660065542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454748 (or 454745 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 11660065542 in words is "eleven billion, six hundred sixty million, sixty-five thousand, five hundred forty-two".