6720718516 has 12 divisors (see below), whose sum is σ = 11778282880. Its totient is φ = 3355494840.

The previous prime is 6720718507. The next prime is 6720718523. The reversal of 6720718516 is 6158170276.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 1212996 + ... + 1218523.

Almost surely, 2^6720718516 is an apocalyptic number.

It is an amenable number.

6720718516 is a deficient number, since it is larger than the sum of its proper divisors (5057564364).

6720718516 is a wasteful number, since it uses less digits than its factorization.

6720718516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432214 (or 2432212 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 6720718516 is about 81979.9885093917. The cubic root of 6720718516 is about 1887.1448464481.

The spelling of 6720718516 in words is "six billion, seven hundred twenty million, seven hundred eighteen thousand, five hundred sixteen".