66156005534 has 8 divisors (see below), whose sum is σ = 99265813248. Its totient is φ = 33067401120.

The previous prime is 66156005521. The next prime is 66156005543. The reversal of 66156005534 is 43550065166.

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

It is a junction number, because it is equal to n+sod(n) for n = 66156005491 and 66156005500.

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 3 ways as a sum of consecutive naturals, for example, 5293022 + ... + 5305505.

It is an arithmetic number, because the mean of its divisors is an integer number (12408226656).

Almost surely, 2^66156005534 is an apocalyptic number.

66156005534 is a deficient number, since it is larger than the sum of its proper divisors (33109807714).

66156005534 is a wasteful number, since it uses less digits than its factorization.

66156005534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10601650.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 66156005534 in words is "sixty-six billion, one hundred fifty-six million, five thousand, five hundred thirty-four".