5721665002 has 4 divisors (see below), whose sum is σ = 8582497506. Its totient is φ = 2860832500.

The previous prime is 5721664937. The next prime is 5721665017. The reversal of 5721665002 is 2005661275.

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

It can be written as a sum of positive squares in only one way, i.e., 5718535641 + 3129361 = 75621^2 + 1769^2 .

It is a super-2 number, since 2×5721665002² = 65474900790223320008, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1430416249 + ... + 1430416252.

Almost surely, 2^5721665002 is an apocalyptic number.

5721665002 is a deficient number, since it is larger than the sum of its proper divisors (2860832504).

5721665002 is a wasteful number, since it uses less digits than its factorization.

5721665002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860832503.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 5721665002 is about 75641.6882545597. The cubic root of 5721665002 is about 1788.5763158202.

The spelling of 5721665002 in words is "five billion, seven hundred twenty-one million, six hundred sixty-five thousand, two".