86181572707 has 4 divisors (see below), whose sum is σ = 86429934936. Its totient is φ = 85933210480.

The previous prime is 86181572699. The next prime is 86181572717. The reversal of 86181572707 is 70727518168.

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

It is a cyclic number.

It is not a de Polignac number, because 86181572707 - 2³ = 86181572699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86181572717) 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, 124180594 + ... + 124181287.

It is an arithmetic number, because the mean of its divisors is an integer number (21607483734).

Almost surely, 2^86181572707 is an apocalyptic number.

86181572707 is a deficient number, since it is larger than the sum of its proper divisors (248362229).

86181572707 is a wasteful number, since it uses less digits than its factorization.

86181572707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248362228.

The product of its (nonzero) digits is 1317120, while the sum is 52.

The spelling of 86181572707 in words is "eighty-six billion, one hundred eighty-one million, five hundred seventy-two thousand, seven hundred seven".