86861817685137 has 64 divisors (see below), whose sum is σ = 139622713251840. Its totient is φ = 47382501196800.

The previous prime is 86861817685129. The next prime is 86861817685147. The reversal of 86861817685137 is 73158671816868.

It is not a de Polignac number, because 86861817685137 - 2³ = 86861817685129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86861817685147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59810439 + ... + 61245507.

It is an arithmetic number, because the mean of its divisors is an integer number (2181604894560).

Almost surely, 2^{86861817685137} is an apocalyptic number.

It is an amenable number.

86861817685137 is a deficient number, since it is larger than the sum of its proper divisors (52760895566703).

86861817685137 is a wasteful number, since it uses less digits than its factorization.

86861817685137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439814.

The product of its digits is 650280960, while the sum is 75.

The spelling of 86861817685137 in words is "eighty-six trillion, eight hundred sixty-one billion, eight hundred seventeen million, six hundred eighty-five thousand, one hundred thirty-seven".