66280551737441 has 8 divisors (see below), whose sum is σ = 68814117490944. Its totient is φ = 63771703698960.

The previous prime is 66280551737431. The next prime is 66280551737447. The reversal of 66280551737441 is 14473715508266.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66280551737441 is a prime.

It is a super-2 number, since 2×66280551737441² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66280551737447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6179423291 + ... + 6179434016.

It is an arithmetic number, because the mean of its divisors is an integer number (8601764686368).

Almost surely, 2^{66280551737441} is an apocalyptic number.

It is an amenable number.

66280551737441 is a deficient number, since it is larger than the sum of its proper divisors (2533565753503).

66280551737441 is a wasteful number, since it uses less digits than its factorization.

66280551737441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12358857511.

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 66280551737441 in words is "sixty-six trillion, two hundred eighty billion, five hundred fifty-one million, seven hundred thirty-seven thousand, four hundred forty-one".