86132811997 has 2 divisors, whose sum is σ = 86132811998. Its totient is φ = 86132811996.

The previous prime is 86132811959. The next prime is 86132812057. The reversal of 86132811997 is 79911823168.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63176319801 + 22956492196 = 251349^2 + 151514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86132811997 is a prime.

It is a super-2 number, since 2×86132811997² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86132811197) 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 as a sum of consecutive naturals, namely, 43066405998 + 43066405999.

It is an arithmetic number, because the mean of its divisors is an integer number (43066405999).

Almost surely, 2^86132811997 is an apocalyptic number.

It is an amenable number.

86132811997 is a deficient number, since it is larger than the sum of its proper divisors (1).

86132811997 is an equidigital number, since it uses as much as digits as its factorization.

86132811997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 55.

The spelling of 86132811997 in words is "eighty-six billion, one hundred thirty-two million, eight hundred eleven thousand, nine hundred ninety-seven".