53251310581632 has 192 divisors, whose sum is σ = 162328663021200. Its totient is φ = 16709092687872.

The previous prime is 53251310581577. The next prime is 53251310581633. The reversal of 53251310581632 is 23618501315235.

53251310581632 is a `hidden beast` number, since 5 + 3 + 2 + 5 + 1 + 3 + 1 + 0 + 5 + 8 + 1 + 632 = 666.

53251310581632 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-3 number, since 3×53251310581632³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53251310581633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4311673 + ... + 11184504.

Almost surely, 2^{53251310581632} is an apocalyptic number.

It is an amenable number.

53251310581632 is an abundant number, since it is smaller than the sum of its proper divisors (109077352439568).

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

53251310581632 is a wasteful number, since it uses less digits than its factorization.

53251310581632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15496373 (or 15496358 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

Adding to 53251310581632 its reverse (23618501315235), we get a palindrome (76869811896867).

The spelling of 53251310581632 in words is "fifty-three trillion, two hundred fifty-one billion, three hundred ten million, five hundred eighty-one thousand, six hundred thirty-two".