871770678530145 has 128 divisors (see below), whose sum is σ = 1491006675529728. Its totient is φ = 434196932198400.

The previous prime is 871770678530131. The next prime is 871770678530177. The reversal of 871770678530145 is 541035876077178.

It is not a de Polignac number, because 871770678530145 - 2¹⁵ = 871770678497377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 871770678530145.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3241697209 + ... + 3241966121.

It is an arithmetic number, because the mean of its divisors is an integer number (11648489652576).

Almost surely, 2^{871770678530145} is an apocalyptic number.

It is an amenable number.

871770678530145 is a deficient number, since it is larger than the sum of its proper divisors (619235996999583).

871770678530145 is a wasteful number, since it uses less digits than its factorization.

871770678530145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270843.

The product of its (nonzero) digits is 276595200, while the sum is 69.

The spelling of 871770678530145 in words is "eight hundred seventy-one trillion, seven hundred seventy billion, six hundred seventy-eight million, five hundred thirty thousand, one hundred forty-five".