85740917391361 has 4 divisors (see below), whose sum is σ = 85763522435332. Its totient is φ = 85718312347392.

The previous prime is 85740917391359. The next prime is 85740917391379. The reversal of 85740917391361 is 16319371904758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40385325953025 + 45355591438336 = 6354945^2 + 6734656^2 .

It is a cyclic number.

It is not a de Polignac number, because 85740917391361 - 2¹ = 85740917391359 is a prime.

It is a super-2 number, since 2×85740917391361² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85740917391293 and 85740917391302.

It is not an unprimeable number, because it can be changed into a prime (85740917391391) 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, 11302516296 + ... + 11302523881.

It is an arithmetic number, because the mean of its divisors is an integer number (21440880608833).

Almost surely, 2^{85740917391361} is an apocalyptic number.

It is an amenable number.

85740917391361 is a deficient number, since it is larger than the sum of its proper divisors (22605043971).

85740917391361 is a wasteful number, since it uses less digits than its factorization.

85740917391361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22605043970.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The spelling of 85740917391361 in words is "eighty-five trillion, seven hundred forty billion, nine hundred seventeen million, three hundred ninety-one thousand, three hundred sixty-one".