66432470121 has 12 divisors (see below), whose sum is σ = 95967701440. Its totient is φ = 44283841560.

The previous prime is 66432470119. The next prime is 66432470147. The reversal of 66432470121 is 12107423466.

66432470121 is a `hidden beast` number, since 6 + 64 + 3 + 2 + 470 + 121 = 666.

It is not a de Polignac number, because 66432470121 - 2¹ = 66432470119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66432471121) 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, 277285 + ... + 457986.

Almost surely, 2^66432470121 is an apocalyptic number.

It is an amenable number.

66432470121 is a deficient number, since it is larger than the sum of its proper divisors (29535231319).

66432470121 is a wasteful number, since it uses less digits than its factorization.

66432470121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745316 (or 745313 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

Adding to 66432470121 its reverse (12107423466), we get a palindrome (78539893587).

The spelling of 66432470121 in words is "sixty-six billion, four hundred thirty-two million, four hundred seventy thousand, one hundred twenty-one".