54937491993 has 24 divisors (see below), whose sum is σ = 83554785600. Its totient is φ = 34687354464.

The previous prime is 54937491953. The next prime is 54937492021. The reversal of 54937491993 is 39919473945.

54937491993 is a `hidden beast` number, since 5 + 493 + 7 + 49 + 19 + 93 = 666.

It is not a de Polignac number, because 54937491993 - 2⁹ = 54937491481 is a prime.

It is a super-2 number, since 2×54937491993² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54937491993.

It is not an unprimeable number, because it can be changed into a prime (54937491953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 572263 + ... + 661331.

It is an arithmetic number, because the mean of its divisors is an integer number (3481449400).

Almost surely, 2^54937491993 is an apocalyptic number.

It is an amenable number.

54937491993 is a deficient number, since it is larger than the sum of its proper divisors (28617293607).

54937491993 is a wasteful number, since it uses less digits than its factorization.

54937491993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92701 (or 92698 counting only the distinct ones).

The product of its digits is 33067440, while the sum is 63.

The spelling of 54937491993 in words is "fifty-four billion, nine hundred thirty-seven million, four hundred ninety-one thousand, nine hundred ninety-three".