55561783339 has 4 divisors (see below), whose sum is σ = 55999277824. Its totient is φ = 55124288856.

The previous prime is 55561783331. The next prime is 55561783369. The reversal of 55561783339 is 93338716555.

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 55561783339 - 2³ = 55561783331 is a prime.

It is a super-2 number, since 2×55561783339² (a number of 22 digits) contains 22 as substring.

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 55561783339.

It is not an unprimeable number, because it can be changed into a prime (55561783331) 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, 218747052 + ... + 218747305.

It is an arithmetic number, because the mean of its divisors is an integer number (13999819456).

Almost surely, 2^55561783339 is an apocalyptic number.

55561783339 is a deficient number, since it is larger than the sum of its proper divisors (437494485).

55561783339 is a wasteful number, since it uses less digits than its factorization.

55561783339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437494484.

The product of its digits is 10206000, while the sum is 55.

The spelling of 55561783339 in words is "fifty-five billion, five hundred sixty-one million, seven hundred eighty-three thousand, three hundred thirty-nine".