54164621205 has 48 divisors (see below), whose sum is σ = 95720227200. Its totient is φ = 28323944064.

The previous prime is 54164621177. The next prime is 54164621207. The reversal of 54164621205 is 50212646145.

54164621205 is a `hidden beast` number, since 5 + 4 + 1 + 6 + 4 + 621 + 20 + 5 = 666.

It is not a de Polignac number, because 54164621205 - 2⁹ = 54164620693 is a prime.

It is a super-2 number, since 2×54164621205² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 54164621205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54164621207) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 4045432 + ... + 4058798.

It is an arithmetic number, because the mean of its divisors is an integer number (1994171400).

Almost surely, 2^54164621205 is an apocalyptic number.

It is an amenable number.

54164621205 is a deficient number, since it is larger than the sum of its proper divisors (41555605995).

54164621205 is a wasteful number, since it uses less digits than its factorization.

54164621205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15130 (or 15127 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 54164621205 in words is "fifty-four billion, one hundred sixty-four million, six hundred twenty-one thousand, two hundred five".