4405177777085 has 4 divisors (see below), whose sum is σ = 5286213332508. Its totient is φ = 3524142221664.

The previous prime is 4405177777081. The next prime is 4405177777093. The reversal of 4405177777085 is 5807777715044.

It is a happy number.

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 697161541444 + 3708016235641 = 834962^2 + 1925621^2 .

It is a cyclic number.

It is not a de Polignac number, because 4405177777085 - 2² = 4405177777081 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 (4405177777081) 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, 440517777704 + ... + 440517777713.

It is an arithmetic number, because the mean of its divisors is an integer number (1321553333127).

Almost surely, 2^{4405177777085} is an apocalyptic number.

It is an amenable number.

4405177777085 is a deficient number, since it is larger than the sum of its proper divisors (881035555423).

4405177777085 is an equidigital number, since it uses as much as digits as its factorization.

4405177777085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881035555422.

The product of its (nonzero) digits is 53782400, while the sum is 62.

The spelling of 4405177777085 in words is "four trillion, four hundred five billion, one hundred seventy-seven million, seven hundred seventy-seven thousand, eighty-five".