85834640145257 has 16 divisors (see below), whose sum is σ = 88241879390400. Its totient is φ = 83432013618240.

The previous prime is 85834640145253. The next prime is 85834640145259. The reversal of 85834640145257 is 75254104643858.

It is a cyclic number.

It is not a de Polignac number, because 85834640145257 - 2² = 85834640145253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85834640145257.

It is not an unprimeable number, because it can be changed into a prime (85834640145253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489805382 + ... + 489980592.

It is an arithmetic number, because the mean of its divisors is an integer number (5515117461900).

Almost surely, 2^{85834640145257} is an apocalyptic number.

It is an amenable number.

85834640145257 is a deficient number, since it is larger than the sum of its proper divisors (2407239245143).

85834640145257 is a wasteful number, since it uses less digits than its factorization.

85834640145257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188296.

The product of its (nonzero) digits is 129024000, while the sum is 62.

The spelling of 85834640145257 in words is "eighty-five trillion, eight hundred thirty-four billion, six hundred forty million, one hundred forty-five thousand, two hundred fifty-seven".