870643488167761 has 64 divisors (see below), whose sum is σ = 1130291291750400. Its totient is φ = 651147661281600.

The previous prime is 870643488167723. The next prime is 870643488167767. The reversal of 870643488167761 is 167761884346078.

It is a happy number.

It is not a de Polignac number, because 870643488167761 - 2³⁵ = 870609128429393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870643488167767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20119920 + ... + 46325998.

It is an arithmetic number, because the mean of its divisors is an integer number (17660801433600).

Almost surely, 2^{870643488167761} is an apocalyptic number.

It is an amenable number.

870643488167761 is a deficient number, since it is larger than the sum of its proper divisors (259647803582639).

870643488167761 is a wasteful number, since it uses less digits than its factorization.

870643488167761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26206330.

The product of its (nonzero) digits is 1820786688, while the sum is 76.

The spelling of 870643488167761 in words is "eight hundred seventy trillion, six hundred forty-three billion, four hundred eighty-eight million, one hundred sixty-seven thousand, seven hundred sixty-one".