86738581970461 has 2 divisors, whose sum is σ = 86738581970462. Its totient is φ = 86738581970460.

The previous prime is 86738581970431. The next prime is 86738581970477. The reversal of 86738581970461 is 16407918583768.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85074907643236 + 1663674327225 = 9223606^2 + 1289835^2 .

It is a cyclic number.

It is not a de Polignac number, because 86738581970461 - 2⁷ = 86738581970333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86738581970431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43369290985230 + 43369290985231.

It is an arithmetic number, because the mean of its divisors is an integer number (43369290985231).

Almost surely, 2^{86738581970461} is an apocalyptic number.

It is an amenable number.

86738581970461 is a deficient number, since it is larger than the sum of its proper divisors (1).

86738581970461 is an equidigital number, since it uses as much as digits as its factorization.

86738581970461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 487710720, while the sum is 73.

The spelling of 86738581970461 in words is "eighty-six trillion, seven hundred thirty-eight billion, five hundred eighty-one million, nine hundred seventy thousand, four hundred sixty-one".