4561161613 has 4 divisors (see below), whose sum is σ = 4629238720. Its totient is φ = 4493084508.

The previous prime is 4561161611. The next prime is 4561161629. The reversal of 4561161613 is 3161611654.

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: 3161611654 = 2 ⋅1580805827.

It is a cyclic number.

It is not a de Polignac number, because 4561161613 - 2¹ = 4561161611 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 (4561161611) 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, 34038453 + ... + 34038586.

It is an arithmetic number, because the mean of its divisors is an integer number (1157309680).

Almost surely, 2^4561161613 is an apocalyptic number.

It is an amenable number.

4561161613 is a deficient number, since it is larger than the sum of its proper divisors (68077107).

4561161613 is an equidigital number, since it uses as much as digits as its factorization.

4561161613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68077106.

The product of its digits is 12960, while the sum is 34.

The square root of 4561161613 is about 67536.3725188139. The cubic root of 4561161613 is about 1658.4096653826.

The spelling of 4561161613 in words is "four billion, five hundred sixty-one million, one hundred sixty-one thousand, six hundred thirteen".