86781238504 has 16 divisors (see below), whose sum is σ = 162717991200. Its totient is φ = 43389774192.

The previous prime is 86781238501. The next prime is 86781238517. The reversal of 86781238504 is 40583218768.

It is not an unprimeable number, because it can be changed into a prime (86781238501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642427 + ... + 765685.

It is an arithmetic number, because the mean of its divisors is an integer number (10169874450).

Almost surely, 2^86781238504 is an apocalyptic number.

It is an amenable number.

86781238504 is a deficient number, since it is larger than the sum of its proper divisors (75936752696).

86781238504 is a wasteful number, since it uses less digits than its factorization.

86781238504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211272 (or 211268 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 86781238504 in words is "eighty-six billion, seven hundred eighty-one million, two hundred thirty-eight thousand, five hundred four".