866507630713815 has 8 divisors (see below), whose sum is σ = 1386412209142128. Its totient is φ = 462137403047360.

The previous prime is 866507630713783. The next prime is 866507630713867. The reversal of 866507630713815 is 518317036705668.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 866507630713815 - 2⁵ = 866507630713783 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28883587690446 + ... + 28883587690475.

It is an arithmetic number, because the mean of its divisors is an integer number (173301526142766).

Almost surely, 2^{866507630713815} is an apocalyptic number.

866507630713815 is a deficient number, since it is larger than the sum of its proper divisors (519904578428313).

866507630713815 is a wasteful number, since it uses less digits than its factorization.

866507630713815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57767175380929.

The product of its (nonzero) digits is 152409600, while the sum is 66.

The spelling of 866507630713815 in words is "eight hundred sixty-six trillion, five hundred seven billion, six hundred thirty million, seven hundred thirteen thousand, eight hundred fifteen".