361616577221 has 4 divisors (see below), whose sum is σ = 361643143200. Its totient is φ = 361590011244.

The previous prime is 361616577181. The next prime is 361616577253. The reversal of 361616577221 is 122775616163.

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 361616577221 - 2¹⁰ = 361616576197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (361616577281) 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, 13262561 + ... + 13289798.

It is an arithmetic number, because the mean of its divisors is an integer number (90410785800).

Almost surely, 2^361616577221 is an apocalyptic number.

It is an amenable number.

361616577221 is a deficient number, since it is larger than the sum of its proper divisors (26565979).

361616577221 is a wasteful number, since it uses less digits than its factorization.

361616577221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26565978.

The product of its digits is 635040, while the sum is 47.

The spelling of 361616577221 in words is "three hundred sixty-one billion, six hundred sixteen million, five hundred seventy-seven thousand, two hundred twenty-one".