85455238057 has 4 divisors (see below), whose sum is σ = 97663129216. Its totient is φ = 73247346900.

The previous prime is 85455238049. The next prime is 85455238061. The reversal of 85455238057 is 75083255458.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85455238057 - 2³ = 85455238049 is a prime.

It is a super-2 number, since 2×85455238057² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85455237995 and 85455238013.

It is not an unprimeable number, because it can be changed into a prime (85455238067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6103945569 + ... + 6103945582.

It is an arithmetic number, because the mean of its divisors is an integer number (24415782304).

Almost surely, 2^85455238057 is an apocalyptic number.

It is an amenable number.

85455238057 is a deficient number, since it is larger than the sum of its proper divisors (12207891159).

85455238057 is a wasteful number, since it uses less digits than its factorization.

85455238057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12207891158.

The product of its (nonzero) digits is 6720000, while the sum is 52.

The spelling of 85455238057 in words is "eighty-five billion, four hundred fifty-five million, two hundred thirty-eight thousand, fifty-seven".