2461219561 has 4 divisors (see below), whose sum is σ = 2470301824. Its totient is φ = 2452137300.

The previous prime is 2461219559. The next prime is 2461219571. The reversal of 2461219561 is 1659121642.

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 2461219561 - 2¹ = 2461219559 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 2461219561.

It is not an unprimeable number, because it can be changed into a prime (2461219571) 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 3 ways as a sum of consecutive naturals, for example, 4540725 + ... + 4541266.

It is an arithmetic number, because the mean of its divisors is an integer number (617575456).

Almost surely, 2^2461219561 is an apocalyptic number.

It is an amenable number.

2461219561 is a deficient number, since it is larger than the sum of its proper divisors (9082263).

2461219561 is an equidigital number, since it uses as much as digits as its factorization.

2461219561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9082262.

The product of its digits is 25920, while the sum is 37.

The square root of 2461219561 is about 49610.6799086648. The cubic root of 2461219561 is about 1350.1544516474.

The spelling of 2461219561 in words is "two billion, four hundred sixty-one million, two hundred nineteen thousand, five hundred sixty-one".