6720021202015 has 32 divisors (see below), whose sum is σ = 9103303402560. Its totient is φ = 4717290547200.

The previous prime is 6720021201977. The next prime is 6720021202031. The reversal of 6720021202015 is 5102021200276.

It is not a de Polignac number, because 6720021202015 - 2¹⁷ = 6720021070943 is a prime.

It is a super-2 number, since 2×6720021202015² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4476285 + ... + 5785945.

It is an arithmetic number, because the mean of its divisors is an integer number (284478231330).

Almost surely, 2^{6720021202015} is an apocalyptic number.

6720021202015 is a deficient number, since it is larger than the sum of its proper divisors (2383282200545).

6720021202015 is a wasteful number, since it uses less digits than its factorization.

6720021202015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312923.

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 6720021202015 in words is "six trillion, seven hundred twenty billion, twenty-one million, two hundred two thousand, fifteen".