3788312772085 has 4 divisors (see below), whose sum is σ = 4545975326508. Its totient is φ = 3030650217664.

The previous prime is 3788312772077. The next prime is 3788312772089. The reversal of 3788312772085 is 5802772138873.

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 501931157841 + 3286381614244 = 708471^2 + 1812838^2 .

It is a cyclic number.

It is not a de Polignac number, because 3788312772085 - 2³ = 3788312772077 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 (3788312772089) 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, 378831277204 + ... + 378831277213.

It is an arithmetic number, because the mean of its divisors is an integer number (1136493831627).

Almost surely, 2^{3788312772085} is an apocalyptic number.

It is an amenable number.

3788312772085 is a deficient number, since it is larger than the sum of its proper divisors (757662554423).

3788312772085 is an equidigital number, since it uses as much as digits as its factorization.

3788312772085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757662554422.

The product of its (nonzero) digits is 31610880, while the sum is 61.

The spelling of 3788312772085 in words is "three trillion, seven hundred eighty-eight billion, three hundred twelve million, seven hundred seventy-two thousand, eighty-five".