66011542234553 has 8 divisors (see below), whose sum is σ = 67808653265160. Its totient is φ = 64215116219520.

The previous prime is 66011542234471. The next prime is 66011542234591. The reversal of 66011542234553 is 35543224511066.

It can be written as a sum of positive squares in 4 ways, for example, as 48356057637904 + 17655484596649 = 6953852^2 + 4201843^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 66011542234553 - 2⁴⁰ = 64912030606777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66011542234498 and 66011542234507.

It is not an unprimeable number, because it can be changed into a prime (66011542134553) 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, 171058538 + ... + 171444003.

It is an arithmetic number, because the mean of its divisors is an integer number (8476081658145).

Almost surely, 2^{66011542234553} is an apocalyptic number.

It is an amenable number.

66011542234553 is a deficient number, since it is larger than the sum of its proper divisors (1797111030607).

66011542234553 is a wasteful number, since it uses less digits than its factorization.

66011542234553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342507787.

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 66011542234553 in words is "sixty-six trillion, eleven billion, five hundred forty-two million, two hundred thirty-four thousand, five hundred fifty-three".