5139128446 has 4 divisors (see below), whose sum is σ = 7708692672. Its totient is φ = 2569564222.

The previous prime is 5139128443. The next prime is 5139128479. The reversal of 5139128446 is 6448219315.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5139128443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284782110 + ... + 1284782113.

It is an arithmetic number, because the mean of its divisors is an integer number (1927173168).

Almost surely, 2^5139128446 is an apocalyptic number.

5139128446 is a deficient number, since it is larger than the sum of its proper divisors (2569564226).

5139128446 is a wasteful number, since it uses less digits than its factorization.

5139128446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569564225.

The product of its digits is 207360, while the sum is 43.

The square root of 5139128446 is about 71687.7147494604. The cubic root of 5139128446 is about 1725.6914901574.

The spelling of 5139128446 in words is "five billion, one hundred thirty-nine million, one hundred twenty-eight thousand, four hundred forty-six".