66773470100378 has 8 divisors (see below), whose sum is σ = 100798168241172. Its totient is φ = 33174080686656.

The previous prime is 66773470100333. The next prime is 66773470100501. The reversal of 66773470100378 is 87300107437766.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 66503160572809 + 270309527569 = 8154947^2 + 519913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106327181375 + ... + 106327182002.

Almost surely, 2^{66773470100378} is an apocalyptic number.

66773470100378 is a deficient number, since it is larger than the sum of its proper divisors (34024698140794).

66773470100378 is a wasteful number, since it uses less digits than its factorization.

66773470100378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212654363536.

The product of its (nonzero) digits is 24893568, while the sum is 59.

The spelling of 66773470100378 in words is "sixty-six trillion, seven hundred seventy-three billion, four hundred seventy million, one hundred thousand, three hundred seventy-eight".