91196410962721 has 8 divisors (see below), whose sum is σ = 96561384646824. Its totient is φ = 85831490492160.

The previous prime is 91196410962703. The next prime is 91196410962739. The reversal of 91196410962721 is 12726901469119.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (91196410962703) and next prime (91196410962739).

It can be written as a sum of positive squares in 4 ways, for example, as 57175601717025 + 34020809245696 = 7561455^2 + 5832736^2 .

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-91196410962721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91196410966721) 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, 9747850 + ... + 16655731.

It is an arithmetic number, because the mean of its divisors is an integer number (12070173080853).

Almost surely, 2^{91196410962721} is an apocalyptic number.

It is an amenable number.

91196410962721 is a deficient number, since it is larger than the sum of its proper divisors (5364973684103).

91196410962721 is a wasteful number, since it uses less digits than its factorization.

91196410962721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26606771.

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 91196410962721 in words is "ninety-one trillion, one hundred ninety-six billion, four hundred ten million, nine hundred sixty-two thousand, seven hundred twenty-one".