870678263327855 has 16 divisors (see below), whose sum is σ = 1045667216820000. Its totient is φ = 695973761353728.

The previous prime is 870678263327813. The next prime is 870678263327921. The reversal of 870678263327855 is 558723362876078.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 870678263327855 - 2¹⁶ = 870678263262319 is a prime.

It is a super-2 number, since 2×870678263327855² (a number of 31 digits) contains 22 as substring.

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, 399548864 + ... + 401722106.

It is an arithmetic number, because the mean of its divisors is an integer number (65354201051250).

Almost surely, 2^{870678263327855} is an apocalyptic number.

870678263327855 is a deficient number, since it is larger than the sum of its proper divisors (174988953492145).

870678263327855 is a wasteful number, since it uses less digits than its factorization.

870678263327855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238650.

The product of its (nonzero) digits is 5689958400, while the sum is 77.

The spelling of 870678263327855 in words is "eight hundred seventy trillion, six hundred seventy-eight billion, two hundred sixty-three million, three hundred twenty-seven thousand, eight hundred fifty-five".