91739134811 has 8 divisors (see below), whose sum is σ = 92120212800. Its totient is φ = 91358181000.

The previous prime is 91739134801. The next prime is 91739134819. The reversal of 91739134811 is 11843193719.

It is a happy number.

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-91739134811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91739134819) 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, 1633760 + ... + 1688978.

It is an arithmetic number, because the mean of its divisors is an integer number (11515026600).

Almost surely, 2^91739134811 is an apocalyptic number.

91739134811 is a deficient number, since it is larger than the sum of its proper divisors (381077989).

91739134811 is a wasteful number, since it uses less digits than its factorization.

91739134811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62089.

The product of its digits is 163296, while the sum is 47.

The spelling of 91739134811 in words is "ninety-one billion, seven hundred thirty-nine million, one hundred thirty-four thousand, eight hundred eleven".