544145321623 has 2 divisors, whose sum is σ = 544145321624. Its totient is φ = 544145321622.

The previous prime is 544145321597. The next prime is 544145321653. The reversal of 544145321623 is 326123541445.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 544145321623 - 2¹³ = 544145313431 is a prime.

It is a super-2 number, since 2×544145321623² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544145321653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272072660811 + 272072660812.

It is an arithmetic number, because the mean of its divisors is an integer number (272072660812).

Almost surely, 2^544145321623 is an apocalyptic number.

544145321623 is a deficient number, since it is larger than the sum of its proper divisors (1).

544145321623 is an equidigital number, since it uses as much as digits as its factorization.

544145321623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 40.

The spelling of 544145321623 in words is "five hundred forty-four billion, one hundred forty-five million, three hundred twenty-one thousand, six hundred twenty-three".