361621437361 has 4 divisors (see below), whose sum is σ = 361631069424. Its totient is φ = 361611805300.

The previous prime is 361621437269. The next prime is 361621437377. The reversal of 361621437361 is 163734126163.

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 361621437361 - 2¹¹ = 361621435313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361621417361) 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, 4759495 + ... + 4834876.

It is an arithmetic number, because the mean of its divisors is an integer number (90407767356).

Almost surely, 2^361621437361 is an apocalyptic number.

It is an amenable number.

361621437361 is a deficient number, since it is larger than the sum of its proper divisors (9632063).

361621437361 is an equidigital number, since it uses as much as digits as its factorization.

361621437361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9632062.

The product of its digits is 326592, while the sum is 43.

The spelling of 361621437361 in words is "three hundred sixty-one billion, six hundred twenty-one million, four hundred thirty-seven thousand, three hundred sixty-one".