66075330257824 has 48 divisors (see below), whose sum is σ = 134836479163008. Its totient is φ = 31852128033792.

The previous prime is 66075330257819. The next prime is 66075330257837. The reversal of 66075330257824 is 42875203357066.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327757929 + ... + 327959464.

It is an arithmetic number, because the mean of its divisors is an integer number (2809093315896).

Almost surely, 2^{66075330257824} is an apocalyptic number.

It is an amenable number.

66075330257824 is an abundant number, since it is smaller than the sum of its proper divisors (68761148905184).

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

66075330257824 is a wasteful number, since it uses less digits than its factorization.

66075330257824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655717517 (or 655717509 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 58.

The spelling of 66075330257824 in words is "sixty-six trillion, seventy-five billion, three hundred thirty million, two hundred fifty-seven thousand, eight hundred twenty-four".