47686767129 has 27 divisors (see below), whose sum is σ = 69800364543. Its totient is φ = 31372338672.

The previous prime is 47686767127. The next prime is 47686767137. The reversal of 47686767129 is 92176768674.

The square root of 47686767129 is 218373.

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

47686767129 is a `hidden beast` number, since 476 + 8 + 6 + 76 + 71 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40178198025 + 7508569104 = 200445^2 + 86652^2 .

It is not a de Polignac number, because 47686767129 - 2¹ = 47686767127 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47686767127) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 54374439 + ... + 54375315.

Almost surely, 2^47686767129 is an apocalyptic number.

47686767129 is the 218373-rd square number.

47686767129 is the 109187-th centered octagonal number.

It is an amenable number.

47686767129 is a deficient number, since it is larger than the sum of its proper divisors (22113597414).

47686767129 is an frugal number, since it uses more digits than its factorization.

47686767129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926 (or 963 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The spelling of 47686767129 in words is "forty-seven billion, six hundred eighty-six million, seven hundred sixty-seven thousand, one hundred twenty-nine".