66012423530 has 16 divisors (see below), whose sum is σ = 119729405664. Its totient is φ = 26203404240.

The previous prime is 66012423493. The next prime is 66012423559. The reversal of 66012423530 is 3532421066.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25194272 + ... + 25196891.

It is an arithmetic number, because the mean of its divisors is an integer number (7483087854).

Almost surely, 2^66012423530 is an apocalyptic number.

66012423530 is a deficient number, since it is larger than the sum of its proper divisors (53716982134).

66012423530 is a wasteful number, since it uses less digits than its factorization.

66012423530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50391301.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 66012423530 its reverse (3532421066), we get a palindrome (69544844596).

The spelling of 66012423530 in words is "sixty-six billion, twelve million, four hundred twenty-three thousand, five hundred thirty".