361560541261 has 4 divisors (see below), whose sum is σ = 382828808412. Its totient is φ = 340292274112.

The previous prime is 361560541151. The next prime is 361560541289. The reversal of 361560541261 is 162145065163.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108722532361 + 252838008900 = 329731^2 + 502830^2 .

It is a cyclic number.

It is not a de Polignac number, because 361560541261 - 2²¹ = 361558444109 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 (361560511261) 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, 10634133550 + ... + 10634133583.

It is an arithmetic number, because the mean of its divisors is an integer number (95707202103).

Almost surely, 2^361560541261 is an apocalyptic number.

It is an amenable number.

361560541261 is a deficient number, since it is larger than the sum of its proper divisors (21268267151).

361560541261 is a wasteful number, since it uses less digits than its factorization.

361560541261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21268267150.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 361560541261 in words is "three hundred sixty-one billion, five hundred sixty million, five hundred forty-one thousand, two hundred sixty-one".