7021565005 has 64 divisors (see below), whose sum is σ = 11042841600. Its totient is φ = 4250873088.

The previous prime is 7021564997. The next prime is 7021565011. The reversal of 7021565005 is 5005651207.

It is not a de Polignac number, because 7021565005 - 2³ = 7021564997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 505939 + ... + 519631.

It is an arithmetic number, because the mean of its divisors is an integer number (172544400).

Almost surely, 2^7021565005 is an apocalyptic number.

It is an amenable number.

7021565005 is a deficient number, since it is larger than the sum of its proper divisors (4021276595).

7021565005 is a wasteful number, since it uses less digits than its factorization.

7021565005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13755 (or 13741 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 7021565005 is about 83794.7791034740. The cubic root of 7021565005 is about 1914.8935675634.

The spelling of 7021565005 in words is "seven billion, twenty-one million, five hundred sixty-five thousand, five".