86541616070831 has 2 divisors, whose sum is σ = 86541616070832. Its totient is φ = 86541616070830.

The previous prime is 86541616070827. The next prime is 86541616070881. The reversal of 86541616070831 is 13807061614568.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86541616070831 - 2² = 86541616070827 is a prime.

It is a super-2 number, since 2×86541616070831² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86541616070881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43270808035415 + 43270808035416.

It is an arithmetic number, because the mean of its divisors is an integer number (43270808035416).

Almost surely, 2^{86541616070831} is an apocalyptic number.

86541616070831 is a deficient number, since it is larger than the sum of its proper divisors (1).

86541616070831 is an equidigital number, since it uses as much as digits as its factorization.

86541616070831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 86541616070831 in words is "eighty-six trillion, five hundred forty-one billion, six hundred sixteen million, seventy thousand, eight hundred thirty-one".