47666678929 has 9 divisors (see below), whose sum is σ = 48132029883. Its totient is φ = 47205790632.

The previous prime is 47666678881. The next prime is 47666678989. The reversal of 47666678929 is 92987666674.

The square root of 47666678929 is 218327.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 33223446529 + 14443232400 = 182273^2 + 120180^2 .

It is not a de Polignac number, because 47666678929 - 2¹⁵ = 47666646161 is a prime.

It is a super-2 number, since 2×47666678929² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47666678989) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 23796642 + ... + 23798644.

Almost surely, 2^47666678929 is an apocalyptic number.

47666678929 is the 218327-th square number.

47666678929 is the 109164-th centered octagonal number.

It is an amenable number.

47666678929 is a deficient number, since it is larger than the sum of its proper divisors (465350954).

47666678929 is an frugal number, since it uses more digits than its factorization.

47666678929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4224 (or 2112 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 70.

The spelling of 47666678929 in words is "forty-seven billion, six hundred sixty-six million, six hundred seventy-eight thousand, nine hundred twenty-nine".