66119779370 has 32 divisors (see below), whose sum is σ = 120500872128. Its totient is φ = 26119024128.

The previous prime is 66119779351. The next prime is 66119779433. The reversal of 66119779370 is 7397791166.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380009 + ... + 525971.

It is an arithmetic number, because the mean of its divisors is an integer number (3765652254).

Almost surely, 2^66119779370 is an apocalyptic number.

66119779370 is a deficient number, since it is larger than the sum of its proper divisors (54381092758).

66119779370 is a wasteful number, since it uses less digits than its factorization.

66119779370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146534.

The product of its (nonzero) digits is 3000564, while the sum is 56.

The spelling of 66119779370 in words is "sixty-six billion, one hundred nineteen million, seven hundred seventy-nine thousand, three hundred seventy".