361220321633 has 4 divisors (see below), whose sum is σ = 361232222208. Its totient is φ = 361208421060.

The previous prime is 361220321597. The next prime is 361220321641. The reversal of 361220321633 is 336123022163.

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, and also an emirpimes, since its reverse is a distinct semiprime: 336123022163 = 19 ⋅17690685377.

It is a cyclic number.

It is not a de Polignac number, because 361220321633 - 2⁸ = 361220321377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 361220321633.

It is not an unprimeable number, because it can be changed into a prime (361220320633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5904641 + ... + 5965502.

It is an arithmetic number, because the mean of its divisors is an integer number (90308055552).

Almost surely, 2^361220321633 is an apocalyptic number.

It is an amenable number.

361220321633 is a deficient number, since it is larger than the sum of its proper divisors (11900575).

361220321633 is a wasteful number, since it uses less digits than its factorization.

361220321633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11900574.

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 361220321633 its reverse (336123022163), we get a palindrome (697343343796).

The spelling of 361220321633 in words is "three hundred sixty-one billion, two hundred twenty million, three hundred twenty-one thousand, six hundred thirty-three".