91343318985971 has 8 divisors (see below), whose sum is σ = 99144292929024. Its totient is φ = 83652997155840.

The previous prime is 91343318985953. The next prime is 91343318985979. The reversal of 91343318985971 is 17958981334319.

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

It is a cyclic number.

It is not a de Polignac number, because 91343318985971 - 2¹⁴ = 91343318969587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91343318985895 and 91343318985904.

It is not an unprimeable number, because it can be changed into a prime (91343318985979) 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, 27663026510 + ... + 27663029811.

It is an arithmetic number, because the mean of its divisors is an integer number (12393036616128).

Almost surely, 2^{91343318985971} is an apocalyptic number.

91343318985971 is a deficient number, since it is larger than the sum of its proper divisors (7800973943053).

91343318985971 is a wasteful number, since it uses less digits than its factorization.

91343318985971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55326056461.

The product of its digits is 176359680, while the sum is 71.

The spelling of 91343318985971 in words is "ninety-one trillion, three hundred forty-three billion, three hundred eighteen million, nine hundred eighty-five thousand, nine hundred seventy-one".