85426434969 has 4 divisors (see below), whose sum is σ = 113901913296. Its totient is φ = 56950956644.

The previous prime is 85426434913. The next prime is 85426434971. The reversal of 85426434969 is 96943462458.

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 85426434969 - 2¹⁹ = 85425910681 is a prime.

It is a super-2 number, since 2×85426434969² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85426424969) 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, 14237739159 + ... + 14237739164.

It is an arithmetic number, because the mean of its divisors is an integer number (28475478324).

Almost surely, 2^85426434969 is an apocalyptic number.

It is an amenable number.

85426434969 is a deficient number, since it is larger than the sum of its proper divisors (28475478327).

85426434969 is a wasteful number, since it uses less digits than its factorization.

85426434969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28475478326.

The product of its digits is 44789760, while the sum is 60.

The spelling of 85426434969 in words is "eighty-five billion, four hundred twenty-six million, four hundred thirty-four thousand, nine hundred sixty-nine".