870646138027678 has 8 divisors (see below), whose sum is σ = 1305969504016968. Its totient is φ = 435322970022024.

The previous prime is 870646138027577. The next prime is 870646138027703. The reversal of 870646138027678 is 876720831646078.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 870646138027678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37964701 + ... + 56414632.

It is an arithmetic number, because the mean of its divisors is an integer number (163246188002121).

Almost surely, 2^{870646138027678} is an apocalyptic number.

870646138027678 is a deficient number, since it is larger than the sum of its proper divisors (435323365989290).

870646138027678 is a wasteful number, since it uses less digits than its factorization.

870646138027678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98991818.

The product of its (nonzero) digits is 910393344, while the sum is 73.

The spelling of 870646138027678 in words is "eight hundred seventy trillion, six hundred forty-six billion, one hundred thirty-eight million, twenty-seven thousand, six hundred seventy-eight".