66538536054 has 8 divisors (see below), whose sum is σ = 133077072120. Its totient is φ = 22179512016.

The previous prime is 66538536037. The next prime is 66538536079. The reversal of 66538536054 is 45063583566.

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

66538536054 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 66538535988 and 66538536006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5544877999 + ... + 5544878010.

It is an arithmetic number, because the mean of its divisors is an integer number (16634634015).

Almost surely, 2^66538536054 is an apocalyptic number.

66538536054 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66538536054 is a wasteful number, since it uses less digits than its factorization.

66538536054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11089756014.

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 66538536054 in words is "sixty-six billion, five hundred thirty-eight million, five hundred thirty-six thousand, fifty-four".