65989934949960 has 192 divisors, whose sum is σ = 255762232577280. Its totient is φ = 14427613094400.

The previous prime is 65989934949959. The next prime is 65989934949979. The reversal of 65989934949960 is 6994943998956.

65989934949960 is a `hidden beast` number, since 6 + 5 + 9 + 89 + 9 + 34 + 9 + 499 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (90).

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 47 ways as a sum of consecutive naturals, for example, 569213391 + ... + 569329310.

It is an arithmetic number, because the mean of its divisors is an integer number (1332094961340).

Almost surely, 2^{65989934949960} is an apocalyptic number.

65989934949960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65989934949960 is an abundant number, since it is smaller than the sum of its proper divisors (189772297627320).

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

65989934949960 is a wasteful number, since it uses less digits than its factorization.

65989934949960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138542748 (or 1138542741 counting only the distinct ones).

The product of its (nonzero) digits is 36733201920, while the sum is 90.

The spelling of 65989934949960 in words is "sixty-five trillion, nine hundred eighty-nine billion, nine hundred thirty-four million, nine hundred forty-nine thousand, nine hundred sixty".