47978751129 has 4 divisors (see below), whose sum is σ = 63971668176. Its totient is φ = 31985834084.

The previous prime is 47978751127. The next prime is 47978751131. The reversal of 47978751129 is 92115787974.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (47978751127) and next prime (47978751131).

It is a cyclic number.

It is not a de Polignac number, because 47978751129 - 2¹ = 47978751127 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47978751127) 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 3 ways as a sum of consecutive naturals, for example, 7996458519 + ... + 7996458524.

It is an arithmetic number, because the mean of its divisors is an integer number (15992917044).

Almost surely, 2^47978751129 is an apocalyptic number.

It is an amenable number.

47978751129 is a deficient number, since it is larger than the sum of its proper divisors (15992917047).

47978751129 is a wasteful number, since it uses less digits than its factorization.

47978751129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15992917046.

The product of its digits is 8890560, while the sum is 60.

The spelling of 47978751129 in words is "forty-seven billion, nine hundred seventy-eight million, seven hundred fifty-one thousand, one hundred twenty-nine".