54639533943 has 24 divisors (see below), whose sum is σ = 79229509632. Its totient is φ = 36285363648.

The previous prime is 54639533939. The next prime is 54639534007. The reversal of 54639533943 is 34933593645.

54639533943 is a `hidden beast` number, since 5 + 4 + 63 + 9 + 533 + 9 + 43 = 666.

It is not a de Polignac number, because 54639533943 - 2² = 54639533939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54639533943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54639533903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8891530 + ... + 8897672.

It is an arithmetic number, because the mean of its divisors is an integer number (3301229568).

Almost surely, 2^54639533943 is an apocalyptic number.

54639533943 is a deficient number, since it is larger than the sum of its proper divisors (24589975689).

54639533943 is a wasteful number, since it uses less digits than its factorization.

54639533943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9815 (or 9812 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 54.

The spelling of 54639533943 in words is "fifty-four billion, six hundred thirty-nine million, five hundred thirty-three thousand, nine hundred forty-three".