86668156575 has 768 divisors, whose sum is σ = 231718502400. Its totient is φ = 30569011200.

The previous prime is 86668156573. The next prime is 86668156579. The reversal of 86668156575 is 57565186668.

It is a happy number.

It is not a de Polignac number, because 86668156575 - 2¹ = 86668156573 is a prime.

It is a super-2 number, since 2×86668156575² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86668156573) by changing a digit.

It is a polite number, since it can be written in 767 ways as a sum of consecutive naturals, for example, 552026397 + ... + 552026553.

It is an arithmetic number, because the mean of its divisors is an integer number (301716800).

Almost surely, 2^86668156575 is an apocalyptic number.

86668156575 is an abundant number, since it is smaller than the sum of its proper divisors (145050345825).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86668156575 is a wasteful number, since it uses less digits than its factorization.

86668156575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269 (or 258 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 63.

The spelling of 86668156575 in words is "eighty-six billion, six hundred sixty-eight million, one hundred fifty-six thousand, five hundred seventy-five".