66038369049 has 12 divisors (see below), whose sum is σ = 95392131796. Its totient is φ = 44024020992.

The previous prime is 66038369041. The next prime is 66038369053. The reversal of 66038369049 is 94096383066.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15623750025 + 50414619024 = 124995^2 + 224532^2 .

It is not a de Polignac number, because 66038369049 - 2³ = 66038369041 is a prime.

It is a super-2 number, since 2×66038369049² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66038368986 and 66038369004.

It is not an unprimeable number, because it can be changed into a prime (66038369041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176577 + ... + 404049.

Almost surely, 2^66038369049 is an apocalyptic number.

It is an amenable number.

66038369049 is a deficient number, since it is larger than the sum of its proper divisors (29353762747).

66038369049 is a wasteful number, since it uses less digits than its factorization.

66038369049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259736 (or 259733 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 54.

The spelling of 66038369049 in words is "sixty-six billion, thirty-eight million, three hundred sixty-nine thousand, forty-nine".