86685213037 has 2 divisors, whose sum is σ = 86685213038. Its totient is φ = 86685213036.

The previous prime is 86685213019. The next prime is 86685213059. The reversal of 86685213037 is 73031258668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83329791561 + 3355421476 = 288669^2 + 57926^2 .

It is a cyclic number.

It is not a de Polignac number, because 86685213037 - 2⁷ = 86685212909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86685213437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43342606518 + 43342606519.

It is an arithmetic number, because the mean of its divisors is an integer number (43342606519).

Almost surely, 2^86685213037 is an apocalyptic number.

It is an amenable number.

86685213037 is a deficient number, since it is larger than the sum of its proper divisors (1).

86685213037 is an equidigital number, since it uses as much as digits as its factorization.

86685213037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 86685213037 in words is "eighty-six billion, six hundred eighty-five million, two hundred thirteen thousand, thirty-seven".