6720561080454 has 16 divisors (see below), whose sum is σ = 14475054634992. Its totient is φ = 2067864947808.

The previous prime is 6720561080411. The next prime is 6720561080461. The reversal of 6720561080454 is 4540801650276.

It is a super-2 number, since 2×6720561080454² (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 7 ways as a sum of consecutive naturals, for example, 43080519669 + ... + 43080519824.

It is an arithmetic number, because the mean of its divisors is an integer number (904690914687).

Almost surely, 2^{6720561080454} is an apocalyptic number.

6720561080454 is an abundant number, since it is smaller than the sum of its proper divisors (7754493554538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6720561080454 is a wasteful number, since it uses less digits than its factorization.

6720561080454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86161039511.

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 6720561080454 in words is "six trillion, seven hundred twenty billion, five hundred sixty-one million, eighty thousand, four hundred fifty-four".