11661155752 has 16 divisors (see below), whose sum is σ = 21925576800. Its totient is φ = 5814335280.

The previous prime is 11661155717. The next prime is 11661155761. The reversal of 11661155752 is 25755116611.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2027274 + ... + 2033017.

It is an arithmetic number, because the mean of its divisors is an integer number (1370348550).

Almost surely, 2^11661155752 is an apocalyptic number.

It is an amenable number.

11661155752 is a deficient number, since it is larger than the sum of its proper divisors (10264421048).

11661155752 is a wasteful number, since it uses less digits than its factorization.

11661155752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060656 (or 4060652 counting only the distinct ones).

The product of its digits is 63000, while the sum is 40.

The spelling of 11661155752 in words is "eleven billion, six hundred sixty-one million, one hundred fifty-five thousand, seven hundred fifty-two".