5273635644 has 18 divisors (see below), whose sum is σ = 13330579080. Its totient is φ = 1757878536.

The previous prime is 5273635643. The next prime is 5273635669. The reversal of 5273635644 is 4465363725.

5273635644 is a `hidden beast` number, since 5 + 2 + 7 + 3 + 635 + 6 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×5273635644² = 55622465811334589472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5273635644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5273635643) 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 5 ways as a sum of consecutive naturals, for example, 73244904 + ... + 73244975.

Almost surely, 2^5273635644 is an apocalyptic number.

It is an amenable number.

5273635644 is an abundant number, since it is smaller than the sum of its proper divisors (8056943436).

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

5273635644 is a wasteful number, since it uses less digits than its factorization.

5273635644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146489889 (or 146489884 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

The square root of 5273635644 is about 72619.8020101955. The cubic root of 5273635644 is about 1740.6176126986.

The spelling of 5273635644 in words is "five billion, two hundred seventy-three million, six hundred thirty-five thousand, six hundred forty-four".