6721512521941 has 16 divisors (see below), whose sum is σ = 8232357798144. Its totient is φ = 5361864609024.

The previous prime is 6721512521903. The next prime is 6721512521947. The reversal of 6721512521941 is 1491252151276.

It is not a de Polignac number, because 6721512521941 - 2⁹ = 6721512521429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6721512521891 and 6721512521900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721512521947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 564163300 + ... + 564175213.

It is an arithmetic number, because the mean of its divisors is an integer number (514522362384).

Almost surely, 2^{6721512521941} is an apocalyptic number.

It is an amenable number.

6721512521941 is a deficient number, since it is larger than the sum of its proper divisors (1510845276203).

6721512521941 is a wasteful number, since it uses less digits than its factorization.

6721512521941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128338580.

The product of its digits is 302400, while the sum is 46.

The spelling of 6721512521941 in words is "six trillion, seven hundred twenty-one billion, five hundred twelve million, five hundred twenty-one thousand, nine hundred forty-one".