11868947650 has 24 divisors (see below), whose sum is σ = 25229992320. Its totient is φ = 4069353360.

The previous prime is 11868947641. The next prime is 11868947729. The reversal of 11868947650 is 5674986811.

It is a junction number, because it is equal to n+sod(n) for n = 11868947591 and 11868947600.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16955290 + ... + 16955989.

It is an arithmetic number, because the mean of its divisors is an integer number (1051249680).

Almost surely, 2^11868947650 is an apocalyptic number.

11868947650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11868947650 is an abundant number, since it is smaller than the sum of its proper divisors (13361044670).

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

11868947650 is a wasteful number, since it uses less digits than its factorization.

11868947650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33911298 (or 33911293 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 11868947650 in words is "eleven billion, eight hundred sixty-eight million, nine hundred forty-seven thousand, six hundred fifty".