361361680681 has 4 divisors (see below), whose sum is σ = 363380461200. Its totient is φ = 359342900164.

The previous prime is 361361680651. The next prime is 361361680697. The reversal of 361361680681 is 186086163163.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 361361680681 - 2⁷ = 361361680553 is a prime.

It is a super-2 number, since 2×361361680681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361361680651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009389991 + ... + 1009390348.

It is an arithmetic number, because the mean of its divisors is an integer number (90845115300).

Almost surely, 2^361361680681 is an apocalyptic number.

It is an amenable number.

361361680681 is a deficient number, since it is larger than the sum of its proper divisors (2018780519).

361361680681 is a wasteful number, since it uses less digits than its factorization.

361361680681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018780518.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 361361680681 in words is "three hundred sixty-one billion, three hundred sixty-one million, six hundred eighty thousand, six hundred eighty-one".