85770423897 has 4 divisors (see below), whose sum is σ = 114360565200. Its totient is φ = 57180282596.

The previous prime is 85770423889. The next prime is 85770423899. The reversal of 85770423897 is 79832407758.

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 85770423897 - 2³ = 85770423889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85770423897.

It is not an unprimeable number, because it can be changed into a prime (85770423899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14295070647 + ... + 14295070652.

It is an arithmetic number, because the mean of its divisors is an integer number (28590141300).

Almost surely, 2^85770423897 is an apocalyptic number.

It is an amenable number.

85770423897 is a deficient number, since it is larger than the sum of its proper divisors (28590141303).

85770423897 is a wasteful number, since it uses less digits than its factorization.

85770423897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28590141302.

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 85770423897 in words is "eighty-five billion, seven hundred seventy million, four hundred twenty-three thousand, eight hundred ninety-seven".