85279853497 has 4 divisors (see below), whose sum is σ = 86034542580. Its totient is φ = 84525164416.

The previous prime is 85279853471. The next prime is 85279853551. The reversal of 85279853497 is 79435897258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79435897258 = 2 ⋅39717948629.

It can be written as a sum of positive squares in 2 ways, for example, as 34609393296 + 50670460201 = 186036^2 + 225101^2 .

It is a cyclic number.

It is not a de Polignac number, because 85279853497 - 2⁷ = 85279853369 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85279853447) 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, 377344372 + ... + 377344597.

It is an arithmetic number, because the mean of its divisors is an integer number (21508635645).

Almost surely, 2^85279853497 is an apocalyptic number.

It is an amenable number.

85279853497 is a deficient number, since it is larger than the sum of its proper divisors (754689083).

85279853497 is a wasteful number, since it uses less digits than its factorization.

85279853497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754689082.

The product of its digits is 152409600, while the sum is 67.

The spelling of 85279853497 in words is "eighty-five billion, two hundred seventy-nine million, eight hundred fifty-three thousand, four hundred ninety-seven".