2671645441 has 4 divisors (see below), whose sum is σ = 2757827584. Its totient is φ = 2585463300.

The previous prime is 2671645429. The next prime is 2671645447. The reversal of 2671645441 is 1445461762.

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: 1445461762 = 2 ⋅722730881.

It is a cyclic number.

It is not a de Polignac number, because 2671645441 - 2⁵ = 2671645409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2671645394 and 2671645403.

It is not an unprimeable number, because it can be changed into a prime (2671645447) 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, 43091025 + ... + 43091086.

It is an arithmetic number, because the mean of its divisors is an integer number (689456896).

Almost surely, 2^2671645441 is an apocalyptic number.

It is an amenable number.

2671645441 is a deficient number, since it is larger than the sum of its proper divisors (86182143).

2671645441 is an equidigital number, since it uses as much as digits as its factorization.

2671645441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86182142.

The product of its digits is 161280, while the sum is 40.

The square root of 2671645441 is about 51687.9622446078. The cubic root of 2671645441 is about 1387.5850344876.

The spelling of 2671645441 in words is "two billion, six hundred seventy-one million, six hundred forty-five thousand, four hundred forty-one".