54203242644 has 36 divisors (see below), whose sum is σ = 137136516244. Its totient is φ = 18051558912.

The previous prime is 54203242637. The next prime is 54203242679. The reversal of 54203242644 is 44624230245.

54203242644 is a `hidden beast` number, since 5 + 4 + 2 + 0 + 3 + 2 + 4 + 2 + 644 = 666.

54203242644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 32620694544 + 21582548100 = 180612^2 + 146910^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×54203242644² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 54203242599 and 54203242608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633757 + ... + 714180.

Almost surely, 2^54203242644 is an apocalyptic number.

It is an amenable number.

54203242644 is an abundant number, since it is smaller than the sum of its proper divisors (82933273600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54203242644 is a wasteful number, since it uses less digits than its factorization.

54203242644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349064 (or 1349059 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 36.

Adding to 54203242644 its reverse (44624230245), we get a palindrome (98827472889).

The spelling of 54203242644 in words is "fifty-four billion, two hundred three million, two hundred forty-two thousand, six hundred forty-four".