66344754267824 has 80 divisors (see below), whose sum is σ = 129626803353600. Its totient is φ = 32893290014208.

The previous prime is 66344754267793. The next prime is 66344754267853. The reversal of 66344754267824 is 42876245744366.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7658399717 + ... + 7658408379.

It is an arithmetic number, because the mean of its divisors is an integer number (1620335041920).

Almost surely, 2^{66344754267824} is an apocalyptic number.

It is an amenable number.

66344754267824 is a deficient number, since it is larger than the sum of its proper divisors (63282049085776).

66344754267824 is a wasteful number, since it uses less digits than its factorization.

66344754267824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12642 (or 12636 counting only the distinct ones).

The product of its digits is 1300561920, while the sum is 68.

It can be divided in two parts, 663447542 and 67824, that added together give a palindrome (663515366).

The spelling of 66344754267824 in words is "sixty-six trillion, three hundred forty-four billion, seven hundred fifty-four million, two hundred sixty-seven thousand, eight hundred twenty-four".