86388964991 has 16 divisors (see below), whose sum is σ = 104571351360. Its totient is φ = 69669642240.

The previous prime is 86388964943. The next prime is 86388965051. The reversal of 86388964991 is 19946988368.

It is a cyclic number.

It is not a de Polignac number, because 86388964991 - 2⁶ = 86388964927 is a prime.

It is a super-3 number, since 3×86388964991³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86388966991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262571 + ... + 491651.

It is an arithmetic number, because the mean of its divisors is an integer number (6535709460).

Almost surely, 2^86388964991 is an apocalyptic number.

86388964991 is a deficient number, since it is larger than the sum of its proper divisors (18182386369).

86388964991 is a wasteful number, since it uses less digits than its factorization.

86388964991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232274.

The product of its digits is 161243136, while the sum is 71.

The spelling of 86388964991 in words is "eighty-six billion, three hundred eighty-eight million, nine hundred sixty-four thousand, nine hundred ninety-one".