800555048138 has 4 divisors (see below), whose sum is σ = 1200832572210. Its totient is φ = 400277524068.

The previous prime is 800555048131. The next prime is 800555048143. The reversal of 800555048138 is 831840555008.

It is a happy number.

800555048138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 452663876809 + 347891171329 = 672803^2 + 589823^2 .

It is a junction number, because it is equal to n+sod(n) for n = 800555048092 and 800555048101.

It is not an unprimeable number, because it can be changed into a prime (800555048131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200138762033 + ... + 200138762036.

Almost surely, 2^800555048138 is an apocalyptic number.

800555048138 is a deficient number, since it is larger than the sum of its proper divisors (400277524072).

800555048138 is a wasteful number, since it uses less digits than its factorization.

800555048138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400277524071.

The product of its (nonzero) digits is 768000, while the sum is 47.

The spelling of 800555048138 in words is "eight hundred billion, five hundred fifty-five million, forty-eight thousand, one hundred thirty-eight".