85124000491 has 2 divisors, whose sum is σ = 85124000492. Its totient is φ = 85124000490.

The previous prime is 85124000483. The next prime is 85124000543. The reversal of 85124000491 is 19400042158.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85124000491 - 2³ = 85124000483 is a prime.

It is not a weakly prime, because it can be changed into another prime (85124000441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42562000245 + 42562000246.

It is an arithmetic number, because the mean of its divisors is an integer number (42562000246).

Almost surely, 2^85124000491 is an apocalyptic number.

85124000491 is a deficient number, since it is larger than the sum of its proper divisors (1).

85124000491 is an equidigital number, since it uses as much as digits as its factorization.

85124000491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 85124000491 in words is "eighty-five billion, one hundred twenty-four million, four hundred ninety-one", and thus it is an aban number.