66873905035553 has 32 divisors (see below), whose sum is σ = 84748819656960. Its totient is φ = 51251196672000.

The previous prime is 66873905035501. The next prime is 66873905035577. The reversal of 66873905035553 is 35553050937866.

66873905035553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66873905035553 - 2⁸ = 66873905035297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66873905035553.

It is not an unprimeable number, because it can be changed into a prime (66873905035253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59039213 + ... + 60161253.

It is an arithmetic number, because the mean of its divisors is an integer number (2648400614280).

Almost surely, 2^{66873905035553} is an apocalyptic number.

It is an amenable number.

66873905035553 is a deficient number, since it is larger than the sum of its proper divisors (17874914621407).

66873905035553 is a wasteful number, since it uses less digits than its factorization.

66873905035553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134809.

The product of its (nonzero) digits is 306180000, while the sum is 65.

The spelling of 66873905035553 in words is "sixty-six trillion, eight hundred seventy-three billion, nine hundred five million, thirty-five thousand, five hundred fifty-three".