54633516638 has 4 divisors (see below), whose sum is σ = 81950274960. Its totient is φ = 27316758318.

The previous prime is 54633516589. The next prime is 54633516649. The reversal of 54633516638 is 83661533645.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×54633516638² (a number of 22 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 13658379158 + ... + 13658379161.

It is an arithmetic number, because the mean of its divisors is an integer number (20487568740).

Almost surely, 2^54633516638 is an apocalyptic number.

54633516638 is a deficient number, since it is larger than the sum of its proper divisors (27316758322).

54633516638 is a wasteful number, since it uses less digits than its factorization.

54633516638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27316758321.

The product of its digits is 4665600, while the sum is 50.

The spelling of 54633516638 in words is "fifty-four billion, six hundred thirty-three million, five hundred sixteen thousand, six hundred thirty-eight".