85779832357 has 4 divisors (see below), whose sum is σ = 85882073760. Its totient is φ = 85677590956.

The previous prime is 85779832343. The next prime is 85779832373. The reversal of 85779832357 is 75323897758.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85779832357 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 (85779832387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51119443 + ... + 51121120.

It is an arithmetic number, because the mean of its divisors is an integer number (21470518440).

Almost surely, 2^85779832357 is an apocalyptic number.

It is an amenable number.

85779832357 is a deficient number, since it is larger than the sum of its proper divisors (102241403).

85779832357 is a wasteful number, since it uses less digits than its factorization.

85779832357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102241402.

The product of its digits is 88905600, while the sum is 64.

The spelling of 85779832357 in words is "eighty-five billion, seven hundred seventy-nine million, eight hundred thirty-two thousand, three hundred fifty-seven".