53531520144 has 40 divisors (see below), whose sum is σ = 140556813312. Its totient is φ = 17551317120.

The previous prime is 53531520121. The next prime is 53531520169. The reversal of 53531520144 is 44102513535.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9138384 + ... + 9144239.

Almost surely, 2^53531520144 is an apocalyptic number.

It is an amenable number.

53531520144 is an abundant number, since it is smaller than the sum of its proper divisors (87025293168).

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

53531520144 is a wasteful number, since it uses less digits than its factorization.

53531520144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18282695 (or 18282689 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 53531520144 in words is "fifty-three billion, five hundred thirty-one million, five hundred twenty thousand, one hundred forty-four".