66099374854 has 16 divisors (see below), whose sum is σ = 104744228400. Its totient is φ = 31197191904.

The previous prime is 66099374843. The next prime is 66099374899. The reversal of 66099374854 is 45847399066.

It is a junction number, because it is equal to n+sod(n) for n = 66099374792 and 66099374801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3129289 + ... + 3150340.

It is an arithmetic number, because the mean of its divisors is an integer number (6546514275).

Almost surely, 2^66099374854 is an apocalyptic number.

66099374854 is a deficient number, since it is larger than the sum of its proper divisors (38644853546).

66099374854 is a wasteful number, since it uses less digits than its factorization.

66099374854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6279927.

The product of its (nonzero) digits is 39191040, while the sum is 61.

The spelling of 66099374854 in words is "sixty-six billion, ninety-nine million, three hundred seventy-four thousand, eight hundred fifty-four".