2671715021 has 4 divisors (see below), whose sum is σ = 2736878844. Its totient is φ = 2606551200.

The previous prime is 2671715009. The next prime is 2671715051. The reversal of 2671715021 is 1205171762.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 168714121 + 2503000900 = 12989^2 + 50030^2 .

It is a cyclic number.

It is not a de Polignac number, because 2671715021 - 2¹⁰ = 2671713997 is a prime.

It is a super-2 number, since 2×2671715021² = 14276122306874060882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2671715051) 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, 32581850 + ... + 32581931.

It is an arithmetic number, because the mean of its divisors is an integer number (684219711).

Almost surely, 2^2671715021 is an apocalyptic number.

It is an amenable number.

2671715021 is a deficient number, since it is larger than the sum of its proper divisors (65163823).

2671715021 is an equidigital number, since it uses as much as digits as its factorization.

2671715021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65163822.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 2671715021 is about 51688.6353176402. The cubic root of 2671715021 is about 1387.5970804135.

Adding to 2671715021 its reverse (1205171762), we get a palindrome (3876886783).

The spelling of 2671715021 in words is "two billion, six hundred seventy-one million, seven hundred fifteen thousand, twenty-one".