86155829257 has 2 divisors, whose sum is σ = 86155829258. Its totient is φ = 86155829256.

The previous prime is 86155829231. The next prime is 86155829261. The reversal of 86155829257 is 75292855168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70877880441 + 15277948816 = 266229^2 + 123604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86155829257 is a prime.

It is a super-2 number, since 2×86155829257² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86155829057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43077914628 + 43077914629.

It is an arithmetic number, because the mean of its divisors is an integer number (43077914629).

Almost surely, 2^86155829257 is an apocalyptic number.

It is an amenable number.

86155829257 is a deficient number, since it is larger than the sum of its proper divisors (1).

86155829257 is an equidigital number, since it uses as much as digits as its factorization.

86155829257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096000, while the sum is 58.

The spelling of 86155829257 in words is "eighty-six billion, one hundred fifty-five million, eight hundred twenty-nine thousand, two hundred fifty-seven".