66101016015 has 24 divisors (see below), whose sum is σ = 114593553360. Its totient is φ = 35248195584.

The previous prime is 66101015963. The next prime is 66101016077. The reversal of 66101016015 is 51061010166.

It is not a de Polignac number, because 66101016015 - 2⁹ = 66101015503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66101016015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171919 + ... + 402191.

It is an arithmetic number, because the mean of its divisors is an integer number (4774731390).

Almost surely, 2^66101016015 is an apocalyptic number.

66101016015 is a deficient number, since it is larger than the sum of its proper divisors (48492537345).

66101016015 is a wasteful number, since it uses less digits than its factorization.

66101016015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236663 (or 236660 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The spelling of 66101016015 in words is "sixty-six billion, one hundred one million, sixteen thousand, fifteen".