11866625840 has 40 divisors (see below), whose sum is σ = 27614089728. Its totient is φ = 4742489600.

The previous prime is 11866625839. The next prime is 11866625857. The reversal of 11866625840 is 4852666811.

It is a tau number, because it is divible by the number of its divisors (40).

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, 27644 + ... + 156516.

Almost surely, 2^11866625840 is an apocalyptic number.

11866625840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11866625840 is an abundant number, since it is smaller than the sum of its proper divisors (15747463888).

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

11866625840 is a wasteful number, since it uses less digits than its factorization.

11866625840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130037 (or 130031 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 11866625840 in words is "eleven billion, eight hundred sixty-six million, six hundred twenty-five thousand, eight hundred forty".