55139149679 has 4 divisors (see below), whose sum is σ = 55151626200. Its totient is φ = 55126673160.

The previous prime is 55139149603. The next prime is 55139149697. The reversal of 55139149679 is 97694193155.

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

It is a cyclic number.

It is not a de Polignac number, because 55139149679 - 2¹² = 55139145583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55139149699) 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, 6231629 + ... + 6240470.

It is an arithmetic number, because the mean of its divisors is an integer number (13787906550).

Almost surely, 2^55139149679 is an apocalyptic number.

55139149679 is a deficient number, since it is larger than the sum of its proper divisors (12476521).

55139149679 is a wasteful number, since it uses less digits than its factorization.

55139149679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12476520.

The product of its digits is 9185400, while the sum is 59.

The spelling of 55139149679 in words is "fifty-five billion, one hundred thirty-nine million, one hundred forty-nine thousand, six hundred seventy-nine".