86571571443 has 32 divisors (see below), whose sum is σ = 147030013440. Its totient is φ = 44108997120.

The previous prime is 86571571439. The next prime is 86571571501. The reversal of 86571571443 is 34417517568.

It is a happy number.

It is not a de Polignac number, because 86571571443 - 2² = 86571571439 is a prime.

It is a super-2 number, since 2×86571571443² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (86571571343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6374728 + ... + 6388293.

It is an arithmetic number, because the mean of its divisors is an integer number (4594687920).

Almost surely, 2^86571571443 is an apocalyptic number.

86571571443 is a deficient number, since it is larger than the sum of its proper divisors (60458441997).

86571571443 is a wasteful number, since it uses less digits than its factorization.

86571571443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12763067.

The product of its digits is 2822400, while the sum is 51.

The spelling of 86571571443 in words is "eighty-six billion, five hundred seventy-one million, five hundred seventy-one thousand, four hundred forty-three".