91963211543 has 8 divisors (see below), whose sum is σ = 111283214112. Its totient is φ = 74188809216.

The previous prime is 91963211521. The next prime is 91963211573. The reversal of 91963211543 is 34511236919.

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-91963211543 is a prime.

It is a super-3 number, since 3×91963211543³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91963211494 and 91963211503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91963211573) 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 7 ways as a sum of consecutive naturals, for example, 386399930 + ... + 386400167.

It is an arithmetic number, because the mean of its divisors is an integer number (13910401764).

Almost surely, 2^91963211543 is an apocalyptic number.

91963211543 is a deficient number, since it is larger than the sum of its proper divisors (19320002569).

91963211543 is a wasteful number, since it uses less digits than its factorization.

91963211543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772800121.

The product of its digits is 174960, while the sum is 44.

The spelling of 91963211543 in words is "ninety-one billion, nine hundred sixty-three million, two hundred eleven thousand, five hundred forty-three".