66076720154019 has 24 divisors (see below), whose sum is σ = 95786282809152. Its totient is φ = 43893248031360.

The previous prime is 66076720153981. The next prime is 66076720154047. The reversal of 66076720154019 is 91045102767066.

66076720154019 is a `hidden beast` number, since 6 + 6 + 0 + 7 + 67 + 20 + 1 + 540 + 19 = 666.

It is not a de Polignac number, because 66076720154019 - 2¹⁷ = 66076720022947 is a prime.

It is a super-2 number, since 2×66076720154019² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66076720154119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104037529 + ... + 104670725.

It is an arithmetic number, because the mean of its divisors is an integer number (3991095117048).

Almost surely, 2^{66076720154019} is an apocalyptic number.

66076720154019 is a deficient number, since it is larger than the sum of its proper divisors (29709562655133).

66076720154019 is a wasteful number, since it uses less digits than its factorization.

66076720154019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674747 (or 674744 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 66076720154019 in words is "sixty-six trillion, seventy-six billion, seven hundred twenty million, one hundred fifty-four thousand, nineteen".