85858407757 has 4 divisors (see below), whose sum is σ = 86294237436. Its totient is φ = 85422578080.

The previous prime is 85858407743. The next prime is 85858407769. The reversal of 85858407757 is 75770485858.

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 45255754756 + 40602653001 = 212734^2 + 201501^2 .

It is a cyclic number.

It is not a de Polignac number, because 85858407757 - 2⁷ = 85858407629 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 (85858407737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217914544 + ... + 217914937.

It is an arithmetic number, because the mean of its divisors is an integer number (21573559359).

Almost surely, 2^85858407757 is an apocalyptic number.

It is an amenable number.

85858407757 is a deficient number, since it is larger than the sum of its proper divisors (435829679).

85858407757 is a wasteful number, since it uses less digits than its factorization.

85858407757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435829678.

The product of its (nonzero) digits is 87808000, while the sum is 64.

The spelling of 85858407757 in words is "eighty-five billion, eight hundred fifty-eight million, four hundred seven thousand, seven hundred fifty-seven".