64941329635812 has 96 divisors (see below), whose sum is σ = 192433211792640. Its totient is φ = 18553271512320.

The previous prime is 64941329635811. The next prime is 64941329635907. The reversal of 64941329635812 is 21853692314946.

It is a happy number.

64941329635812 is a `hidden beast` number, since 6 + 4 + 9 + 41 + 3 + 2 + 9 + 6 + 3 + 581 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 64941329635812.

It is not an unprimeable number, because it can be changed into a prime (64941329635811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6862362 + ... + 13303182.

It is an arithmetic number, because the mean of its divisors is an integer number (2004512622840).

Almost surely, 2^{64941329635812} is an apocalyptic number.

It is an amenable number.

64941329635812 is an abundant number, since it is smaller than the sum of its proper divisors (127491882156828).

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

64941329635812 is a wasteful number, since it uses less digits than its factorization.

64941329635812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6454178 (or 6454170 counting only the distinct ones).

The product of its digits is 67184640, while the sum is 63.

The spelling of 64941329635812 in words is "sixty-four trillion, nine hundred forty-one billion, three hundred twenty-nine million, six hundred thirty-five thousand, eight hundred twelve".