866423027100 has 36 divisors (see below), whose sum is σ = 2506850625944. Its totient is φ = 231046140480.

The previous prime is 866423027081. The next prime is 866423027101. The reversal of 866423027100 is 1720324668.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866423027101) 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, 1444038079 + ... + 1444038678.

Almost surely, 2^866423027100 is an apocalyptic number.

It is an amenable number.

866423027100 is an abundant number, since it is smaller than the sum of its proper divisors (1640427598844).

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

866423027100 is a wasteful number, since it uses less digits than its factorization.

866423027100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888076774 (or 2888076767 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 866423027100 in words is "eight hundred sixty-six billion, four hundred twenty-three million, twenty-seven thousand, one hundred".