66523542804005 has 8 divisors (see below), whose sum is σ = 91232287274112. Its totient is φ = 45616143637008.

The previous prime is 66523542803983. The next prime is 66523542804049. The reversal of 66523542804005 is 50040824532566.

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

It is not a de Polignac number, because 66523542804005 - 2⁸ = 66523542803749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950336325737 + ... + 950336325806.

It is an arithmetic number, because the mean of its divisors is an integer number (11404035909264).

Almost surely, 2^{66523542804005} is an apocalyptic number.

It is an amenable number.

66523542804005 is a deficient number, since it is larger than the sum of its proper divisors (24708744470107).

66523542804005 is a wasteful number, since it uses less digits than its factorization.

66523542804005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900672651555.

The product of its (nonzero) digits is 6912000, while the sum is 50.

The spelling of 66523542804005 in words is "sixty-six trillion, five hundred twenty-three billion, five hundred forty-two million, eight hundred four thousand, five".