66012256410 has 32 divisors (see below), whose sum is σ = 158561416512. Its totient is φ = 17588601600.

The previous prime is 66012256403. The next prime is 66012256439. The reversal of 66012256410 is 1465221066.

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 15 ways as a sum of consecutive naturals, for example, 880044 + ... + 952103.

It is an arithmetic number, because the mean of its divisors is an integer number (4955044266).

Almost surely, 2^66012256410 is an apocalyptic number.

66012256410 is an abundant number, since it is smaller than the sum of its proper divisors (92549160102).

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

66012256410 is a wasteful number, since it uses less digits than its factorization.

66012256410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833358.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 66012256410 its reverse (1465221066), we get a palindrome (67477477476).

The spelling of 66012256410 in words is "sixty-six billion, twelve million, two hundred fifty-six thousand, four hundred ten".