548340533991 has 12 divisors (see below), whose sum is σ = 792082758168. Its totient is φ = 365544054384.

The previous prime is 548340533981. The next prime is 548340534011. The reversal of 548340533991 is 199335043845.

548340533991 is a `hidden beast` number, since 5 + 483 + 40 + 5 + 3 + 39 + 91 = 666.

It is not a de Polignac number, because 548340533991 - 2⁹ = 548340533479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548340533921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1143645 + ... + 1550678.

It is an arithmetic number, because the mean of its divisors is an integer number (66006896514).

Almost surely, 2^548340533991 is an apocalyptic number.

548340533991 is a deficient number, since it is larger than the sum of its proper divisors (243742224177).

548340533991 is a wasteful number, since it uses less digits than its factorization.

548340533991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716942 (or 2716939 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 548340533991 in words is "five hundred forty-eight billion, three hundred forty million, five hundred thirty-three thousand, nine hundred ninety-one".