866441083882870 has 32 divisors (see below), whose sum is σ = 1568964084026976. Its totient is φ = 344496022041600.

The previous prime is 866441083882867. The next prime is 866441083882901. The reversal of 866441083882870 is 78288380144668.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 866441083882793 and 866441083882802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111249424 + ... + 118782643.

It is an arithmetic number, because the mean of its divisors is an integer number (49030127625843).

Almost surely, 2^{866441083882870} is an apocalyptic number.

866441083882870 is a deficient number, since it is larger than the sum of its proper divisors (702523000144106).

866441083882870 is a wasteful number, since it uses less digits than its factorization.

866441083882870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230034336.

The product of its (nonzero) digits is 792723456, while the sum is 73.

The spelling of 866441083882870 in words is "eight hundred sixty-six trillion, four hundred forty-one billion, eighty-three million, eight hundred eighty-two thousand, eight hundred seventy".