86610570077 has 2 divisors, whose sum is σ = 86610570078. Its totient is φ = 86610570076.

The previous prime is 86610570061. The next prime is 86610570173. The reversal of 86610570077 is 77007501668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67978047076 + 18632523001 = 260726^2 + 136501^2 .

It is a cyclic number.

It is not a de Polignac number, because 86610570077 - 2⁴ = 86610570061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86610570677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43305285038 + 43305285039.

It is an arithmetic number, because the mean of its divisors is an integer number (43305285039).

Almost surely, 2^86610570077 is an apocalyptic number.

It is an amenable number.

86610570077 is a deficient number, since it is larger than the sum of its proper divisors (1).

86610570077 is an equidigital number, since it uses as much as digits as its factorization.

86610570077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 86610570077 in words is "eighty-six billion, six hundred ten million, five hundred seventy thousand, seventy-seven".