381516717717 has 24 divisors (see below), whose sum is σ = 590581315584. Its totient is φ = 236710720224.

The previous prime is 381516717713. The next prime is 381516717727. The reversal of 381516717717 is 717717615183.

It is not a de Polignac number, because 381516717717 - 2² = 381516717713 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381516717713) 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 23 ways as a sum of consecutive naturals, for example, 24898773 + ... + 24914090.

It is an arithmetic number, because the mean of its divisors is an integer number (24607554816).

Almost surely, 2^381516717717 is an apocalyptic number.

381516717717 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

381516717717 is a deficient number, since it is larger than the sum of its proper divisors (209064597867).

381516717717 is a wasteful number, since it uses less digits than its factorization.

381516717717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49812929 (or 49812926 counting only the distinct ones).

The product of its digits is 1728720, while the sum is 54.

The spelling of 381516717717 in words is "three hundred eighty-one billion, five hundred sixteen million, seven hundred seventeen thousand, seven hundred seventeen".