363743221761 has 12 divisors (see below), whose sum is σ = 525619022292. Its totient is φ = 242397567456.

The previous prime is 363743221759. The next prime is 363743221769. The reversal of 363743221761 is 167122347363.

363743221761 is a `hidden beast` number, since 3 + 6 + 374 + 3 + 2 + 217 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 243400142736 + 120343079025 = 493356^2 + 346905^2 .

It is not a de Polignac number, because 363743221761 - 2¹ = 363743221759 is a prime.

It is a super-2 number, since 2×363743221761² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (363743221769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8135946 + ... + 8180531.

It is an arithmetic number, because the mean of its divisors is an integer number (43801585191).

Almost surely, 2^363743221761 is an apocalyptic number.

It is an amenable number.

363743221761 is a deficient number, since it is larger than the sum of its proper divisors (161875800531).

363743221761 is a wasteful number, since it uses less digits than its factorization.

363743221761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16318960 (or 16318957 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The spelling of 363743221761 in words is "three hundred sixty-three billion, seven hundred forty-three million, two hundred twenty-one thousand, seven hundred sixty-one".