144420807447533 has 2 divisors, whose sum is σ = 144420807447534. Its totient is φ = 144420807447532.

The previous prime is 144420807447509. The next prime is 144420807447677. The reversal of 144420807447533 is 335744708024441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142225707408964 + 2195100038569 = 11925842^2 + 1481587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144420807447533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144420807447233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72210403723766 + 72210403723767.

It is an arithmetic number, because the mean of its divisors is an integer number (72210403723767).

Almost surely, 2^{144420807447533} is an apocalyptic number.

It is an amenable number.

144420807447533 is a deficient number, since it is larger than the sum of its proper divisors (1).

144420807447533 is an equidigital number, since it uses as much as digits as its factorization.

144420807447533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36126720, while the sum is 56.

The spelling of 144420807447533 in words is "one hundred forty-four trillion, four hundred twenty billion, eight hundred seven million, four hundred forty-seven thousand, five hundred thirty-three".