55979505849 has 8 divisors (see below), whose sum is σ = 74647020640. Its totient is φ = 37315830816.

The previous prime is 55979505809. The next prime is 55979505851. The reversal of 55979505849 is 94850597955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55979505849 - 2⁷ = 55979505721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55979505849.

It is not an unprimeable number, because it can be changed into a prime (55979505809) 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 7 ways as a sum of consecutive naturals, for example, 925747 + ... + 984360.

It is an arithmetic number, because the mean of its divisors is an integer number (9330877580).

Almost surely, 2^55979505849 is an apocalyptic number.

It is an amenable number.

55979505849 is a deficient number, since it is larger than the sum of its proper divisors (18667514791).

55979505849 is a wasteful number, since it uses less digits than its factorization.

55979505849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919879.

The product of its (nonzero) digits is 102060000, while the sum is 66.

The spelling of 55979505849 in words is "fifty-five billion, nine hundred seventy-nine million, five hundred five thousand, eight hundred forty-nine".