85458095197 has 4 divisors (see below), whose sum is σ = 85466401596. Its totient is φ = 85449788800.

The previous prime is 85458095189. The next prime is 85458095269. The reversal of 85458095197 is 79159085458.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79159085458 = 2 ⋅39579542729.

It can be written as a sum of positive squares in 2 ways, for example, as 48757497721 + 36700597476 = 220811^2 + 191574^2 .

It is a cyclic number.

It is not a de Polignac number, because 85458095197 - 2³ = 85458095189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85458095137) 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, 4137748 + ... + 4158349.

It is an arithmetic number, because the mean of its divisors is an integer number (21366600399).

Almost surely, 2^85458095197 is an apocalyptic number.

It is an amenable number.

85458095197 is a deficient number, since it is larger than the sum of its proper divisors (8306399).

85458095197 is a wasteful number, since it uses less digits than its factorization.

85458095197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306398.

The product of its (nonzero) digits is 18144000, while the sum is 61.

The spelling of 85458095197 in words is "eighty-five billion, four hundred fifty-eight million, ninety-five thousand, one hundred ninety-seven".