53752009644 has 48 divisors (see below), whose sum is σ = 139389644800. Its totient is φ = 17913147408.

The previous prime is 53752009643. The next prime is 53752009651. The reversal of 53752009644 is 44690025735.

53752009644 is a `hidden beast` number, since 5 + 37 + 520 + 0 + 96 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 53752009644.

It is not an unprimeable number, because it can be changed into a prime (53752009643) 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 15 ways as a sum of consecutive naturals, for example, 424317 + ... + 536235.

Almost surely, 2^53752009644 is an apocalyptic number.

53752009644 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

53752009644 is an abundant number, since it is smaller than the sum of its proper divisors (85637635156).

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

53752009644 is a wasteful number, since it uses less digits than its factorization.

53752009644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116379 (or 116371 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 53752009644 in words is "fifty-three billion, seven hundred fifty-two million, nine thousand, six hundred forty-four".