11621767866 has 8 divisors (see below), whose sum is σ = 23243535744. Its totient is φ = 3873922620.

The previous prime is 11621767799. The next prime is 11621767891. The reversal of 11621767866 is 66876712611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

11621767866 is an admirable number.

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, 968480650 + ... + 968480661.

It is an arithmetic number, because the mean of its divisors is an integer number (2905441968).

Almost surely, 2^11621767866 is an apocalyptic number.

11621767866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11621767866 is a wasteful number, since it uses less digits than its factorization.

11621767866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936961316.

The product of its digits is 1016064, while the sum is 51.

The spelling of 11621767866 in words is "eleven billion, six hundred twenty-one million, seven hundred sixty-seven thousand, eight hundred sixty-six".