65381059512 has 48 divisors (see below), whose sum is σ = 177233589000. Its totient is φ = 21774008256.

The previous prime is 65381059489. The next prime is 65381059553. The reversal of 65381059512 is 21595018356.

65381059512 is a `hidden beast` number, since 6 + 5 + 3 + 81 + 0 + 59 + 512 = 666.

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 11 ways as a sum of consecutive naturals, for example, 329562 + ... + 489257.

Almost surely, 2^65381059512 is an apocalyptic number.

It is an amenable number.

65381059512 is an abundant number, since it is smaller than the sum of its proper divisors (111852529488).

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

65381059512 is a wasteful number, since it uses less digits than its factorization.

65381059512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819940 (or 819933 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 65381059512 in words is "sixty-five billion, three hundred eighty-one million, fifty-nine thousand, five hundred twelve".