4156745617 has 4 divisors (see below), whose sum is σ = 4157564656. Its totient is φ = 4155926580.

The previous prime is 4156745603. The next prime is 4156745647. The reversal of 4156745617 is 7165476514.

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 4156745617 - 2¹⁵ = 4156712849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4156745647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401859 + ... + 412072.

It is an arithmetic number, because the mean of its divisors is an integer number (1039391164).

Almost surely, 2^4156745617 is an apocalyptic number.

It is an amenable number.

4156745617 is a deficient number, since it is larger than the sum of its proper divisors (819039).

4156745617 is an equidigital number, since it uses as much as digits as its factorization.

4156745617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819038.

The product of its digits is 705600, while the sum is 46.

The square root of 4156745617 is about 64472.8285171358. The cubic root of 4156745617 is about 1607.8708035900.

The spelling of 4156745617 in words is "four billion, one hundred fifty-six million, seven hundred forty-five thousand, six hundred seventeen".