53006656440 has 64 divisors (see below), whose sum is σ = 159072076800. Its totient is φ = 14130476672.

The previous prime is 53006656427. The next prime is 53006656457. The reversal of 53006656440 is 4465660035.

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 in 15 ways as a sum of consecutive naturals, for example, 303469 + ... + 445091.

It is an arithmetic number, because the mean of its divisors is an integer number (2485501200).

Almost surely, 2^53006656440 is an apocalyptic number.

It is an amenable number.

53006656440 is an abundant number, since it is smaller than the sum of its proper divisors (106065420360).

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

53006656440 is a wasteful number, since it uses less digits than its factorization.

53006656440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144756 (or 144752 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 53006656440 in words is "fifty-three billion, six million, six hundred fifty-six thousand, four hundred forty".