878395787487 has 12 divisors (see below), whose sum is σ = 1268822182264. Its totient is φ = 585584145360.

The previous prime is 878395787483. The next prime is 878395787519. The reversal of 878395787487 is 784787593878.

878395787487 is a `hidden beast` number, since 8 + 7 + 8 + 3 + 9 + 57 + 87 + 487 = 666.

It is not a de Polignac number, because 878395787487 - 2² = 878395787483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878395787483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 651589 + ... + 1476942.

Almost surely, 2^878395787487 is an apocalyptic number.

878395787487 is a deficient number, since it is larger than the sum of its proper divisors (390426394777).

878395787487 is a wasteful number, since it uses less digits than its factorization.

878395787487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174390 (or 2174387 counting only the distinct ones).

The product of its digits is 5310627840, while the sum is 81.

The spelling of 878395787487 in words is "eight hundred seventy-eight billion, three hundred ninety-five million, seven hundred eighty-seven thousand, four hundred eighty-seven".