387173844416077 has 4 divisors (see below), whose sum is σ = 389139193880316. Its totient is φ = 385208494951840.

The previous prime is 387173844416069. The next prime is 387173844416119. The reversal of 387173844416077 is 770614448371783.

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 172411238258116 + 214762606157961 = 13130546^2 + 14654781^2 .

It is a cyclic number.

It is not a de Polignac number, because 387173844416077 - 2³ = 387173844416069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 387173844415997 and 387173844416015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387173844416377) 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, 982674731824 + ... + 982674732217.

It is an arithmetic number, because the mean of its divisors is an integer number (97284798470079).

Almost surely, 2^{387173844416077} is an apocalyptic number.

It is an amenable number.

387173844416077 is a deficient number, since it is larger than the sum of its proper divisors (1965349464239).

387173844416077 is a wasteful number, since it uses less digits than its factorization.

387173844416077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965349464238.

The product of its (nonzero) digits is 531062784, while the sum is 70.

The spelling of 387173844416077 in words is "three hundred eighty-seven trillion, one hundred seventy-three billion, eight hundred forty-four million, four hundred sixteen thousand, seventy-seven".