55561723445 has 8 divisors (see below), whose sum is σ = 67518044160. Its totient is φ = 43886728080.

The previous prime is 55561723439. The next prime is 55561723487. The reversal of 55561723445 is 54432716555.

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

It is not a de Polignac number, because 55561723445 - 2⁶ = 55561723381 is a prime.

It is a super-2 number, since 2×55561723445² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55561723445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70330901 + ... + 70331690.

It is an arithmetic number, because the mean of its divisors is an integer number (8439755520).

Almost surely, 2^55561723445 is an apocalyptic number.

It is an amenable number.

55561723445 is a deficient number, since it is larger than the sum of its proper divisors (11956320715).

55561723445 is a wasteful number, since it uses less digits than its factorization.

55561723445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140662675.

The product of its digits is 2520000, while the sum is 47.

The spelling of 55561723445 in words is "fifty-five billion, five hundred sixty-one million, seven hundred twenty-three thousand, four hundred forty-five".