86640615077873 has 4 divisors (see below), whose sum is σ = 86641379979840. Its totient is φ = 86639850175908.

The previous prime is 86640615077867. The next prime is 86640615077897. The reversal of 86640615077873 is 37877051604668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86640615077873 - 2²⁸ = 86640346642417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86640615077803) 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, 382281053 + ... + 382507626.

It is an arithmetic number, because the mean of its divisors is an integer number (21660344994960).

Almost surely, 2^{86640615077873} is an apocalyptic number.

It is an amenable number.

86640615077873 is a deficient number, since it is larger than the sum of its proper divisors (764901967).

86640615077873 is a wasteful number, since it uses less digits than its factorization.

86640615077873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764901966.

The product of its (nonzero) digits is 284497920, while the sum is 68.

The spelling of 86640615077873 in words is "eighty-six trillion, six hundred forty billion, six hundred fifteen million, seventy-seven thousand, eight hundred seventy-three".