86542155811518 has 32 divisors (see below), whose sum is σ = 188819602899840. Its totient is φ = 26224846553760.

The previous prime is 86542155811513. The next prime is 86542155811519. The reversal of 86542155811518 is 81511855124568.

It is a super-2 number, since 2×86542155811518² (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 (86542155811513) 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, 50858721 + ... + 52532787.

It is an arithmetic number, because the mean of its divisors is an integer number (5900612590620).

Almost surely, 2^{86542155811518} is an apocalyptic number.

86542155811518 is an abundant number, since it is smaller than the sum of its proper divisors (102277447088322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86542155811518 is a wasteful number, since it uses less digits than its factorization.

86542155811518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457352.

The product of its digits is 15360000, while the sum is 60.

The spelling of 86542155811518 in words is "eighty-six trillion, five hundred forty-two billion, one hundred fifty-five million, eight hundred eleven thousand, five hundred eighteen".