66419269384 has 16 divisors (see below), whose sum is σ = 134115832620. Its totient is φ = 30655047360.

The previous prime is 66419269381. The next prime is 66419269391. The reversal of 66419269384 is 48396291466.

It can be written as a sum of positive squares in 2 ways, for example, as 64781448484 + 1637820900 = 254522^2 + 40470^2 .

It is not an unprimeable number, because it can be changed into a prime (66419269381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319323307 + ... + 319323514.

Almost surely, 2^66419269384 is an apocalyptic number.

It is an amenable number.

66419269384 is an abundant number, since it is smaller than the sum of its proper divisors (67696563236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66419269384 is a wasteful number, since it uses less digits than its factorization.

66419269384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638646840 (or 638646836 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 58.

The spelling of 66419269384 in words is "sixty-six billion, four hundred nineteen million, two hundred sixty-nine thousand, three hundred eighty-four".