66654161614 has 32 divisors (see below), whose sum is σ = 105927639840. Its totient is φ = 31408540800.

The previous prime is 66654161603. The next prime is 66654161641. The reversal of 66654161614 is 41616145666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391572 + ... + 535384.

It is an arithmetic number, because the mean of its divisors is an integer number (3310238745).

Almost surely, 2^66654161614 is an apocalyptic number.

66654161614 is a deficient number, since it is larger than the sum of its proper divisors (39273478226).

66654161614 is a wasteful number, since it uses less digits than its factorization.

66654161614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144036.

The product of its digits is 622080, while the sum is 46.

The spelling of 66654161614 in words is "sixty-six billion, six hundred fifty-four million, one hundred sixty-one thousand, six hundred fourteen".