86641436924109 has 12 divisors (see below), whose sum is σ = 125149210578652. Its totient is φ = 57760741785600.

The previous prime is 86641436924057. The next prime is 86641436924143. The reversal of 86641436924109 is 90142963414668.

It is a happy number.

86641436924109 is a `hidden beast` number, since 8 + 6 + 6 + 4 + 1 + 436 + 92 + 4 + 109 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 75026952476100 + 11614484448009 = 8661810^2 + 3408003^2 .

It is not a de Polignac number, because 86641436924109 - 2¹² = 86641436920013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86641436924309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15456052 + ... + 20302029.

Almost surely, 2^{86641436924109} is an apocalyptic number.

It is an amenable number.

86641436924109 is a deficient number, since it is larger than the sum of its proper divisors (38507773654543).

86641436924109 is a wasteful number, since it uses less digits than its factorization.

86641436924109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36027308 (or 36027305 counting only the distinct ones).

The product of its (nonzero) digits is 53747712, while the sum is 63.

The spelling of 86641436924109 in words is "eighty-six trillion, six hundred forty-one billion, four hundred thirty-six million, nine hundred twenty-four thousand, one hundred nine".