28139593461 has 64 divisors (see below), whose sum is σ = 45675878400. Its totient is φ = 15066245376.

The previous prime is 28139593421. The next prime is 28139593477. The reversal of 28139593461 is 16439593182.

It is not a de Polignac number, because 28139593461 - 2⁷ = 28139593333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28139593421) 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 63 ways as a sum of consecutive naturals, for example, 9980710 + ... + 9983528.

It is an arithmetic number, because the mean of its divisors is an integer number (713685600).

Almost surely, 2^28139593461 is an apocalyptic number.

28139593461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28139593461 is a deficient number, since it is larger than the sum of its proper divisors (17536284939).

28139593461 is a wasteful number, since it uses less digits than its factorization.

28139593461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3338.

The product of its digits is 1399680, while the sum is 51.

The spelling of 28139593461 in words is "twenty-eight billion, one hundred thirty-nine million, five hundred ninety-three thousand, four hundred sixty-one".