85480785881 has 2 divisors, whose sum is σ = 85480785882. Its totient is φ = 85480785880.

The previous prime is 85480785847. The next prime is 85480785911. The reversal of 85480785881 is 18858708458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74417112025 + 11063673856 = 272795^2 + 105184^2 .

It is a cyclic number.

It is not a de Polignac number, because 85480785881 - 2²⁶ = 85413677017 is a prime.

It is a super-2 number, since 2×85480785881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85480784881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42740392940 + 42740392941.

It is an arithmetic number, because the mean of its divisors is an integer number (42740392941).

Almost surely, 2^85480785881 is an apocalyptic number.

It is an amenable number.

85480785881 is a deficient number, since it is larger than the sum of its proper divisors (1).

85480785881 is an equidigital number, since it uses as much as digits as its factorization.

85480785881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22937600, while the sum is 62.

The spelling of 85480785881 in words is "eighty-five billion, four hundred eighty million, seven hundred eighty-five thousand, eight hundred eighty-one".