66711043430 has 32 divisors (see below), whose sum is σ = 121840949088. Its totient is φ = 26293766400.

The previous prime is 66711043429. The next prime is 66711043453. The reversal of 66711043430 is 3434011766.

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 15 ways as a sum of consecutive naturals, for example, 731465 + ... + 817595.

It is an arithmetic number, because the mean of its divisors is an integer number (3807529659).

Almost surely, 2^66711043430 is an apocalyptic number.

66711043430 is a deficient number, since it is larger than the sum of its proper divisors (55129905658).

66711043430 is a wasteful number, since it uses less digits than its factorization.

66711043430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87272.

The product of its (nonzero) digits is 36288, while the sum is 35.

The spelling of 66711043430 in words is "sixty-six billion, seven hundred eleven million, forty-three thousand, four hundred thirty".