86051129609 has 4 divisors (see below), whose sum is σ = 86063663940. Its totient is φ = 86038595280.

The previous prime is 86051129519. The next prime is 86051129629. The reversal of 86051129609 is 90692115068.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17689798009 + 68361331600 = 133003^2 + 261460^2 .

It is a cyclic number.

It is not a de Polignac number, because 86051129609 - 2³⁶ = 17331652873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86051129629) 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, 6256862 + ... + 6270599.

It is an arithmetic number, because the mean of its divisors is an integer number (21515915985).

Almost surely, 2^86051129609 is an apocalyptic number.

It is an amenable number.

86051129609 is a deficient number, since it is larger than the sum of its proper divisors (12534331).

86051129609 is a wasteful number, since it uses less digits than its factorization.

86051129609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12534330.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 86051129609 in words is "eighty-six billion, fifty-one million, one hundred twenty-nine thousand, six hundred nine".