48009138689 has 4 divisors (see below), whose sum is σ = 49664626260. Its totient is φ = 46353651120.

The previous prime is 48009138629. The next prime is 48009138691. The reversal of 48009138689 is 98683190084.

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 31428198400 + 16580940289 = 177280^2 + 128767^2 .

It is a cyclic number.

It is not a de Polignac number, because 48009138689 - 2⁸ = 48009138433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48009138629) 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, 827743742 + ... + 827743799.

It is an arithmetic number, because the mean of its divisors is an integer number (12416156565).

Almost surely, 2^48009138689 is an apocalyptic number.

It is an amenable number.

48009138689 is a deficient number, since it is larger than the sum of its proper divisors (1655487571).

48009138689 is a wasteful number, since it uses less digits than its factorization.

48009138689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655487570.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 48009138689 in words is "forty-eight billion, nine million, one hundred thirty-eight thousand, six hundred eighty-nine".