66013666454 has 16 divisors (see below), whose sum is σ = 102476149920. Its totient is φ = 31855864320.

The previous prime is 66013666427. The next prime is 66013666471. The reversal of 66013666454 is 45466631066.

It is a junction number, because it is equal to n+sod(n) for n = 66013666399 and 66013666408.

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, 82187 + ... + 372534.

It is an arithmetic number, because the mean of its divisors is an integer number (6404759370).

Almost surely, 2^66013666454 is an apocalyptic number.

66013666454 is a deficient number, since it is larger than the sum of its proper divisors (36462483466).

66013666454 is a wasteful number, since it uses less digits than its factorization.

66013666454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457255.

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 66013666454 in words is "sixty-six billion, thirteen million, six hundred sixty-six thousand, four hundred fifty-four".