66110075109278 has 16 divisors (see below), whose sum is σ = 99983699533824. Its totient is φ = 32782371927480.

The previous prime is 66110075109233. The next prime is 66110075109301. The reversal of 66110075109278 is 87290157001166.

It is a Curzon number.

It is a congruent number.

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, 48491978 + ... + 49836653.

It is an arithmetic number, because the mean of its divisors is an integer number (6248981220864).

Almost surely, 2^{66110075109278} is an apocalyptic number.

66110075109278 is a deficient number, since it is larger than the sum of its proper divisors (33873624424546).

66110075109278 is a wasteful number, since it uses less digits than its factorization.

66110075109278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98331407.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 66110075109278 in words is "sixty-six trillion, one hundred ten billion, seventy-five million, one hundred nine thousand, two hundred seventy-eight".