85552990427 has 2 divisors, whose sum is σ = 85552990428. Its totient is φ = 85552990426.

The previous prime is 85552990421. The next prime is 85552990517. The reversal of 85552990427 is 72409925558.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85552990427 - 2⁶ = 85552990363 is a prime.

It is not a weakly prime, because it can be changed into another prime (85552990421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42776495213 + 42776495214.

It is an arithmetic number, because the mean of its divisors is an integer number (42776495214).

Almost surely, 2^85552990427 is an apocalyptic number.

85552990427 is a deficient number, since it is larger than the sum of its proper divisors (1).

85552990427 is an equidigital number, since it uses as much as digits as its factorization.

85552990427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 85552990427 in words is "eighty-five billion, five hundred fifty-two million, nine hundred ninety thousand, four hundred twenty-seven".