85705914419 has 4 divisors (see below), whose sum is σ = 90216752040. Its totient is φ = 81195076800.

The previous prime is 85705914397. The next prime is 85705914421. The reversal of 85705914419 is 91441950758.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85705914419 is a prime.

It is a super-2 number, since 2×85705914419² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85705911419) 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, 2255418782 + ... + 2255418819.

It is an arithmetic number, because the mean of its divisors is an integer number (22554188010).

Almost surely, 2^85705914419 is an apocalyptic number.

85705914419 is a deficient number, since it is larger than the sum of its proper divisors (4510837621).

85705914419 is a wasteful number, since it uses less digits than its factorization.

85705914419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510837620.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 85705914419 in words is "eighty-five billion, seven hundred five million, nine hundred fourteen thousand, four hundred nineteen".