85461623131 has 2 divisors, whose sum is σ = 85461623132. Its totient is φ = 85461623130.

The previous prime is 85461623077. The next prime is 85461623161. The reversal of 85461623131 is 13132616458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85461623131 - 2⁹ = 85461622619 is a prime.

It is a super-2 number, since 2×85461623131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85461623161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42730811565 + 42730811566.

It is an arithmetic number, because the mean of its divisors is an integer number (42730811566).

Almost surely, 2^85461623131 is an apocalyptic number.

85461623131 is a deficient number, since it is larger than the sum of its proper divisors (1).

85461623131 is an equidigital number, since it uses as much as digits as its factorization.

85461623131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The spelling of 85461623131 in words is "eighty-five billion, four hundred sixty-one million, six hundred twenty-three thousand, one hundred thirty-one".