86431208061 has 16 divisors (see below), whose sum is σ = 125743569408. Its totient is φ = 52371946800.

The previous prime is 86431208057. The next prime is 86431208063. The reversal of 86431208061 is 16080213468.

It is not a de Polignac number, because 86431208061 - 2² = 86431208057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86431208063) 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, 98025 + ... + 427166.

It is an arithmetic number, because the mean of its divisors is an integer number (7858973088).

Almost surely, 2^86431208061 is an apocalyptic number.

It is an amenable number.

86431208061 is a deficient number, since it is larger than the sum of its proper divisors (39312361347).

86431208061 is a wasteful number, since it uses less digits than its factorization.

86431208061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530192.

The product of its (nonzero) digits is 55296, while the sum is 39.

It can be divided in two parts, 86431 and 208061, that added together give a palindrome (294492).

The spelling of 86431208061 in words is "eighty-six billion, four hundred thirty-one million, two hundred eight thousand, sixty-one".