86637436364878 has 48 divisors (see below), whose sum is σ = 153259676190720. Its totient is φ = 36618992098416.

The previous prime is 86637436364851. The next prime is 86637436364929. The reversal of 86637436364878 is 87846363473668.

It is a Harshad number since it is a multiple of its sum of digits (79).

It is a junction number, because it is equal to n+sod(n) for n = 86637436364798 and 86637436364807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 559051 + ... + 13175257.

It is an arithmetic number, because the mean of its divisors is an integer number (3192909920640).

Almost surely, 2^{86637436364878} is an apocalyptic number.

86637436364878 is a deficient number, since it is larger than the sum of its proper divisors (66622239825842).

86637436364878 is a wasteful number, since it uses less digits than its factorization.

86637436364878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12617189 (or 12617182 counting only the distinct ones).

The product of its digits is 14046068736, while the sum is 79.

The spelling of 86637436364878 in words is "eighty-six trillion, six hundred thirty-seven billion, four hundred thirty-six million, three hundred sixty-four thousand, eight hundred seventy-eight".