86057679509 has 2 divisors, whose sum is σ = 86057679510. Its totient is φ = 86057679508.

The previous prime is 86057679439. The next prime is 86057679563. The reversal of 86057679509 is 90597675068.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84884822500 + 1172857009 = 291350^2 + 34247^2 .

It is a cyclic number.

It is not a de Polignac number, because 86057679509 - 2¹⁶ = 86057613973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86057679569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43028839754 + 43028839755.

It is an arithmetic number, because the mean of its divisors is an integer number (43028839755).

Almost surely, 2^86057679509 is an apocalyptic number.

It is an amenable number.

86057679509 is a deficient number, since it is larger than the sum of its proper divisors (1).

86057679509 is an equidigital number, since it uses as much as digits as its factorization.

86057679509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28576800, while the sum is 62.

The spelling of 86057679509 in words is "eighty-six billion, fifty-seven million, six hundred seventy-nine thousand, five hundred nine".