320173231756777 has 48 divisors (see below), whose sum is σ = 386886797322240. Its totient is φ = 263978414042112.

The previous prime is 320173231756771. The next prime is 320173231756787. The reversal of 320173231756777 is 777657132371023.

It is a de Polignac number, because none of the positive numbers 2^k-320173231756777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320173231756771) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62704249 + ... + 67617817.

It is an arithmetic number, because the mean of its divisors is an integer number (8060141610880).

Almost surely, 2^{320173231756777} is an apocalyptic number.

320173231756777 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

320173231756777 is a deficient number, since it is larger than the sum of its proper divisors (66713565565463).

320173231756777 is a wasteful number, since it uses less digits than its factorization.

320173231756777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914030 (or 4914023 counting only the distinct ones).

The product of its (nonzero) digits is 54454680, while the sum is 61.

The spelling of 320173231756777 in words is "three hundred twenty trillion, one hundred seventy-three billion, two hundred thirty-one million, seven hundred fifty-six thousand, seven hundred seventy-seven".