86278566132485 has 4 divisors (see below), whose sum is σ = 103534279358988. Its totient is φ = 69022852905984.

The previous prime is 86278566132481. The next prime is 86278566132557. The reversal of 86278566132485 is 58423166587268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47079935236324 + 39198630896161 = 6861482^2 + 6260881^2 .

It is a cyclic number.

It is not a de Polignac number, because 86278566132485 - 2² = 86278566132481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86278566132481) 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, 8627856613244 + ... + 8627856613253.

It is an arithmetic number, because the mean of its divisors is an integer number (25883569839747).

Almost surely, 2^{86278566132485} is an apocalyptic number.

It is an amenable number.

86278566132485 is a deficient number, since it is larger than the sum of its proper divisors (17255713226503).

86278566132485 is a wasteful number, since it uses less digits than its factorization.

86278566132485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17255713226502.

The product of its digits is 928972800, while the sum is 71.

The spelling of 86278566132485 in words is "eighty-six trillion, two hundred seventy-eight billion, five hundred sixty-six million, one hundred thirty-two thousand, four hundred eighty-five".