55144340340545 has 8 divisors (see below), whose sum is σ = 67787189101800. Its totient is φ = 43039485143680.

The previous prime is 55144340340517. The next prime is 55144340340547. The reversal of 55144340340545 is 54504304344155.

It can be written as a sum of positive squares in 4 ways, for example, as 2879479791409 + 52264860549136 = 1696903^2 + 7229444^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-55144340340545 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55144340340545.

It is not an unprimeable number, because it can be changed into a prime (55144340340547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134498390870 + ... + 134498391279.

It is an arithmetic number, because the mean of its divisors is an integer number (8473398637725).

Almost surely, 2^{55144340340545} is an apocalyptic number.

It is an amenable number.

55144340340545 is a deficient number, since it is larger than the sum of its proper divisors (12642848761255).

55144340340545 is a wasteful number, since it uses less digits than its factorization.

55144340340545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268996782195.

The product of its (nonzero) digits is 5760000, while the sum is 47.

The spelling of 55144340340545 in words is "fifty-five trillion, one hundred forty-four billion, three hundred forty million, three hundred forty thousand, five hundred forty-five".