86542979845 has 8 divisors (see below), whose sum is σ = 118687515264. Its totient is φ = 59343757584.

The previous prime is 86542979821. The next prime is 86542979869. The reversal of 86542979845 is 54897924568.

It is an interprime number because it is at equal distance from previous prime (86542979821) and next prime (86542979869).

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

It is a cyclic number.

It is not a de Polignac number, because 86542979845 - 2⁵ = 86542979813 is a prime.

It is a Duffinian number.

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, 1236328249 + ... + 1236328318.

It is an arithmetic number, because the mean of its divisors is an integer number (14835939408).

Almost surely, 2^86542979845 is an apocalyptic number.

It is an amenable number.

86542979845 is a deficient number, since it is larger than the sum of its proper divisors (32144535419).

86542979845 is a wasteful number, since it uses less digits than its factorization.

86542979845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2472656579.

The product of its digits is 174182400, while the sum is 67.

The spelling of 86542979845 in words is "eighty-six billion, five hundred forty-two million, nine hundred seventy-nine thousand, eight hundred forty-five".