85855504457 has 4 divisors (see below), whose sum is σ = 86094656640. Its totient is φ = 85616352276.

The previous prime is 85855504433. The next prime is 85855504463. The reversal of 85855504457 is 75440555858.

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 a cyclic number.

It is not a de Polignac number, because 85855504457 - 2⁶ = 85855504393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85855504157) 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, 119575553 + ... + 119576270.

It is an arithmetic number, because the mean of its divisors is an integer number (21523664160).

Almost surely, 2^85855504457 is an apocalyptic number.

It is an amenable number.

85855504457 is a deficient number, since it is larger than the sum of its proper divisors (239152183).

85855504457 is a wasteful number, since it uses less digits than its factorization.

85855504457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239152182.

The product of its (nonzero) digits is 22400000, while the sum is 56.

The spelling of 85855504457 in words is "eighty-five billion, eight hundred fifty-five million, five hundred four thousand, four hundred fifty-seven".