91748613332 has 24 divisors (see below), whose sum is σ = 165508769664. Its totient is φ = 44478637952.

The previous prime is 91748613317. The next prime is 91748613347. The reversal of 91748613332 is 23331684719.

It is an interprime number because it is at equal distance from previous prime (91748613317) and next prime (91748613347).

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2260373 + ... + 2300604.

It is an arithmetic number, because the mean of its divisors is an integer number (6896198736).

Almost surely, 2^91748613332 is an apocalyptic number.

It is an amenable number.

91748613332 is a deficient number, since it is larger than the sum of its proper divisors (73760156332).

91748613332 is a wasteful number, since it uses less digits than its factorization.

91748613332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561135 (or 4561133 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The spelling of 91748613332 in words is "ninety-one billion, seven hundred forty-eight million, six hundred thirteen thousand, three hundred thirty-two".