85441307977 has 4 divisors (see below), whose sum is σ = 85442010880. Its totient is φ = 85440605076.

The previous prime is 85441307951. The next prime is 85441307983. The reversal of 85441307977 is 77970314458.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 85441307977 - 2²⁷ = 85307090249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85441307927) 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, 116973 + ... + 429610.

It is an arithmetic number, because the mean of its divisors is an integer number (21360502720).

Almost surely, 2^85441307977 is an apocalyptic number.

It is an amenable number.

85441307977 is a deficient number, since it is larger than the sum of its proper divisors (702903).

85441307977 is a wasteful number, since it uses less digits than its factorization.

85441307977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702902.

The product of its (nonzero) digits is 5927040, while the sum is 55.

The spelling of 85441307977 in words is "eighty-five billion, four hundred forty-one million, three hundred seven thousand, nine hundred seventy-seven".