361405646661 has 8 divisors (see below), whose sum is σ = 484566230880. Its totient is φ = 239591080112.

The previous prime is 361405646603. The next prime is 361405646669. The reversal of 361405646661 is 166646504163.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 361405646661 - 2⁷ = 361405646533 is a prime.

It is a super-2 number, since 2×361405646661² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 361405646661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361405646669) 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 7 ways as a sum of consecutive naturals, for example, 336503790 + ... + 336504863.

It is an arithmetic number, because the mean of its divisors is an integer number (60570778860).

Almost surely, 2^361405646661 is an apocalyptic number.

It is an amenable number.

361405646661 is a deficient number, since it is larger than the sum of its proper divisors (123160584219).

361405646661 is a wasteful number, since it uses less digits than its factorization.

361405646661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673008835.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 361405646661 in words is "three hundred sixty-one billion, four hundred five million, six hundred forty-six thousand, six hundred sixty-one".