144855553813 has 4 divisors (see below), whose sum is σ = 149850572940. Its totient is φ = 139860534688.

The previous prime is 144855553789. The next prime is 144855553837. The reversal of 144855553813 is 318355558441.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (144855553789) and next prime (144855553837).

It can be written as a sum of positive squares in 2 ways, for example, as 44893981924 + 99961571889 = 211882^2 + 316167^2 .

It is a cyclic number.

It is not a de Polignac number, because 144855553813 - 2¹³ = 144855545621 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 (144855553883) 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, 2497509520 + ... + 2497509577.

It is an arithmetic number, because the mean of its divisors is an integer number (37462643235).

Almost surely, 2^144855553813 is an apocalyptic number.

It is an amenable number.

144855553813 is a deficient number, since it is larger than the sum of its proper divisors (4995019127).

144855553813 is an equidigital number, since it uses as much as digits as its factorization.

144855553813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995019126.

The product of its digits is 5760000, while the sum is 52.

The spelling of 144855553813 in words is "one hundred forty-four billion, eight hundred fifty-five million, five hundred fifty-three thousand, eight hundred thirteen".