866441137814428 has 24 divisors (see below), whose sum is σ = 1665069302784384. Its totient is φ = 391228689558000.

The previous prime is 866441137814407. The next prime is 866441137814453. The reversal of 866441137814428 is 824418731144668.

It is a super-2 number, since 2×866441137814428² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65204774950 + ... + 65204788237.

It is an arithmetic number, because the mean of its divisors is an integer number (69377887616016).

Almost surely, 2^{866441137814428} is an apocalyptic number.

It is an amenable number.

866441137814428 is a deficient number, since it is larger than the sum of its proper divisors (798628164969956).

866441137814428 is a wasteful number, since it uses less digits than its factorization.

866441137814428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130409563353 (or 130409563351 counting only the distinct ones).

The product of its digits is 198180864, while the sum is 67.

The spelling of 866441137814428 in words is "eight hundred sixty-six trillion, four hundred forty-one billion, one hundred thirty-seven million, eight hundred fourteen thousand, four hundred twenty-eight".