86142655565981 has 8 divisors (see below), whose sum is σ = 104239852113600. Its totient is φ = 69493234742208.

The previous prime is 86142655565977. The next prime is 86142655566007. The reversal of 86142655565981 is 18956555624168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86142655565981 - 2² = 86142655565977 is a prime.

It is a super-2 number, since 2×86142655565981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86142655565971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361943930831 + ... + 361943931068.

It is an arithmetic number, because the mean of its divisors is an integer number (13029981514200).

Almost surely, 2^{86142655565981} is an apocalyptic number.

It is an amenable number.

86142655565981 is a deficient number, since it is larger than the sum of its proper divisors (18097196547619).

86142655565981 is a wasteful number, since it uses less digits than its factorization.

86142655565981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723887861923.

The product of its digits is 622080000, while the sum is 71.

The spelling of 86142655565981 in words is "eighty-six trillion, one hundred forty-two billion, six hundred fifty-five million, five hundred sixty-five thousand, nine hundred eighty-one".