47644592129 has 4 divisors (see below), whose sum is σ = 47646908676. Its totient is φ = 47642275584.

The previous prime is 47644592111. The next prime is 47644592131. The reversal of 47644592129 is 92129544674.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24012601600 + 23631990529 = 154960^2 + 153727^2 .

It is a cyclic number.

It is not a de Polignac number, because 47644592129 - 2²⁸ = 47376156673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47644595129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127144 + ... + 1168649.

It is an arithmetic number, because the mean of its divisors is an integer number (11911727169).

Almost surely, 2^47644592129 is an apocalyptic number.

It is an amenable number.

47644592129 is a deficient number, since it is larger than the sum of its proper divisors (2316547).

47644592129 is a wasteful number, since it uses less digits than its factorization.

47644592129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316546.

The product of its digits is 4354560, while the sum is 53.

The spelling of 47644592129 in words is "forty-seven billion, six hundred forty-four million, five hundred ninety-two thousand, one hundred twenty-nine".