66613045015 has 16 divisors (see below), whose sum is σ = 89329425696. Its totient is φ = 47264243200.

The previous prime is 66613045007. The next prime is 66613045033. The reversal of 66613045015 is 51054031666.

It is not a de Polignac number, because 66613045015 - 2³ = 66613045007 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 15 ways as a sum of consecutive naturals, for example, 14767822 + ... + 14772331.

It is an arithmetic number, because the mean of its divisors is an integer number (5583089106).

Almost surely, 2^66613045015 is an apocalyptic number.

66613045015 is a deficient number, since it is larger than the sum of its proper divisors (22716380681).

66613045015 is a wasteful number, since it uses less digits than its factorization.

66613045015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29540210.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 66613045015 in words is "sixty-six billion, six hundred thirteen million, forty-five thousand, fifteen".