85488250391 has 2 divisors, whose sum is σ = 85488250392. Its totient is φ = 85488250390.

The previous prime is 85488250301. The next prime is 85488250411. The reversal of 85488250391 is 19305288458.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85488250391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85488250301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42744125195 + 42744125196.

It is an arithmetic number, because the mean of its divisors is an integer number (42744125196).

Almost surely, 2^85488250391 is an apocalyptic number.

85488250391 is a deficient number, since it is larger than the sum of its proper divisors (1).

85488250391 is an equidigital number, since it uses as much as digits as its factorization.

85488250391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 85488250391 in words is "eighty-five billion, four hundred eighty-eight million, two hundred fifty thousand, three hundred ninety-one".