145278239723 has 2 divisors, whose sum is σ = 145278239724. Its totient is φ = 145278239722.

The previous prime is 145278239681. The next prime is 145278239731. The reversal of 145278239723 is 327932872541.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145278239723 is a prime.

It is a super-2 number, since 2×145278239723² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145278239783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72639119861 + 72639119862.

It is an arithmetic number, because the mean of its divisors is an integer number (72639119862).

Almost surely, 2^145278239723 is an apocalyptic number.

145278239723 is a deficient number, since it is larger than the sum of its proper divisors (1).

145278239723 is an equidigital number, since it uses as much as digits as its factorization.

145278239723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 53.

The spelling of 145278239723 in words is "one hundred forty-five billion, two hundred seventy-eight million, two hundred thirty-nine thousand, seven hundred twenty-three".