66967808054 has 16 divisors (see below), whose sum is σ = 114808318368. Its totient is φ = 28698898752.

The previous prime is 66967808051. The next prime is 66967808071. The reversal of 66967808054 is 45080876966.

It is a junction number, because it is equal to n+sod(n) for n = 66967807984 and 66967808002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66967808051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149882 + ... + 395474.

It is an arithmetic number, because the mean of its divisors is an integer number (7175519898).

Almost surely, 2^66967808054 is an apocalyptic number.

66967808054 is a deficient number, since it is larger than the sum of its proper divisors (47840510314).

66967808054 is a wasteful number, since it uses less digits than its factorization.

66967808054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265079.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 66967808054 in words is "sixty-six billion, nine hundred sixty-seven million, eight hundred eight thousand, fifty-four".