14661561601 has 4 divisors (see below), whose sum is σ = 14665031104. Its totient is φ = 14658092100.

The previous prime is 14661561589. The next prime is 14661561619. The reversal of 14661561601 is 10616516641.

14661561601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10616516641 = 523 ⋅20299267.

It is a cyclic number.

It is not a de Polignac number, because 14661561601 - 2¹⁷ = 14661430529 is a prime.

It is a super-2 number, since 2×14661561601² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14661561701) 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, 1728405 + ... + 1736866.

It is an arithmetic number, because the mean of its divisors is an integer number (3666257776).

Almost surely, 2^14661561601 is an apocalyptic number.

It is an amenable number.

14661561601 is a deficient number, since it is larger than the sum of its proper divisors (3469503).

14661561601 is an equidigital number, since it uses as much as digits as its factorization.

14661561601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469502.

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

The spelling of 14661561601 in words is "fourteen billion, six hundred sixty-one million, five hundred sixty-one thousand, six hundred one".