2366751561 has 4 divisors (see below), whose sum is σ = 3155668752. Its totient is φ = 1577834372.

The previous prime is 2366751493. The next prime is 2366751571. The reversal of 2366751561 is 1651576632.

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 2366751561 - 2¹¹ = 2366749513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2366751571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 394458591 + ... + 394458596.

It is an arithmetic number, because the mean of its divisors is an integer number (788917188).

Almost surely, 2^2366751561 is an apocalyptic number.

It is an amenable number.

2366751561 is a deficient number, since it is larger than the sum of its proper divisors (788917191).

2366751561 is an equidigital number, since it uses as much as digits as its factorization.

2366751561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788917190.

The product of its digits is 226800, while the sum is 42.

The square root of 2366751561 is about 48649.2709195112. The cubic root of 2366751561 is about 1332.6544609843.

The spelling of 2366751561 in words is "two billion, three hundred sixty-six million, seven hundred fifty-one thousand, five hundred sixty-one".