6961352608721 has 8 divisors (see below), whose sum is σ = 8301737272704. Its totient is φ = 5707444374720.

The previous prime is 6961352608607. The next prime is 6961352608723. The reversal of 6961352608721 is 1278062531696.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6961352608721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6961352608723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21619107320 + ... + 21619107641.

It is an arithmetic number, because the mean of its divisors is an integer number (1037717159088).

Almost surely, 2^{6961352608721} is an apocalyptic number.

It is an amenable number.

6961352608721 is a deficient number, since it is larger than the sum of its proper divisors (1340384663983).

6961352608721 is a wasteful number, since it uses less digits than its factorization.

6961352608721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43238214991.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 6961352608721 in words is "six trillion, nine hundred sixty-one billion, three hundred fifty-two million, six hundred eight thousand, seven hundred twenty-one".