86878434546 has 24 divisors (see below), whose sum is σ = 195208335504. Its totient is φ = 28959478020.

The previous prime is 86878434479. The next prime is 86878434583. The reversal of 86878434546 is 64543487868.

86878434546 is a `hidden beast` number, since 8 + 6 + 8 + 7 + 84 + 3 + 4 + 546 = 666.

It is a super-2 number, since 2×86878434546² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89380620 + ... + 89381591.

It is an arithmetic number, because the mean of its divisors is an integer number (8133680646).

Almost surely, 2^86878434546 is an apocalyptic number.

86878434546 is an abundant number, since it is smaller than the sum of its proper divisors (108329900958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86878434546 is a wasteful number, since it uses less digits than its factorization.

86878434546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178762228 (or 178762216 counting only the distinct ones).

The product of its digits is 123863040, while the sum is 63.

The spelling of 86878434546 in words is "eighty-six billion, eight hundred seventy-eight million, four hundred thirty-four thousand, five hundred forty-six".