86515456385 has 4 divisors (see below), whose sum is σ = 103818547668. Its totient is φ = 69212365104.

The previous prime is 86515456367. The next prime is 86515456411. The reversal of 86515456385 is 58365451568.

It is a happy number.

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 64186729201 + 22328727184 = 253351^2 + 149428^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86515456385 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86515456385.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8651545634 + ... + 8651545643.

It is an arithmetic number, because the mean of its divisors is an integer number (25954636917).

Almost surely, 2^86515456385 is an apocalyptic number.

It is an amenable number.

86515456385 is a deficient number, since it is larger than the sum of its proper divisors (17303091283).

86515456385 is a wasteful number, since it uses less digits than its factorization.

86515456385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17303091282.

The product of its digits is 17280000, while the sum is 56.

The spelling of 86515456385 in words is "eighty-six billion, five hundred fifteen million, four hundred fifty-six thousand, three hundred eighty-five".