86855634401 has 4 divisors (see below), whose sum is σ = 91426983600. Its totient is φ = 82284285204.

The previous prime is 86855634389. The next prime is 86855634443. The reversal of 86855634401 is 10443655868.

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 a de Polignac number, because none of the positive numbers 2^k-86855634401 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 86855634401.

It is not an unprimeable number, because it can be changed into a prime (86855634001) 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, 2285674571 + ... + 2285674608.

It is an arithmetic number, because the mean of its divisors is an integer number (22856745900).

Almost surely, 2^86855634401 is an apocalyptic number.

It is an amenable number.

86855634401 is a deficient number, since it is larger than the sum of its proper divisors (4571349199).

86855634401 is a wasteful number, since it uses less digits than its factorization.

86855634401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571349198.

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 86855634401 in words is "eighty-six billion, eight hundred fifty-five million, six hundred thirty-four thousand, four hundred one".