145273183381 has 2 divisors, whose sum is σ = 145273183382. Its totient is φ = 145273183380.

The previous prime is 145273183343. The next prime is 145273183397. The reversal of 145273183381 is 183381372541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125003966481 + 20269216900 = 353559^2 + 142370^2 .

It is a cyclic number.

It is not a de Polignac number, because 145273183381 - 2⁹ = 145273182869 is a prime.

It is a super-2 number, since 2×145273183381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145273183301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72636591690 + 72636591691.

It is an arithmetic number, because the mean of its divisors is an integer number (72636591691).

Almost surely, 2^145273183381 is an apocalyptic number.

It is an amenable number.

145273183381 is a deficient number, since it is larger than the sum of its proper divisors (1).

145273183381 is an equidigital number, since it uses as much as digits as its factorization.

145273183381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 46.

The spelling of 145273183381 in words is "one hundred forty-five billion, two hundred seventy-three million, one hundred eighty-three thousand, three hundred eighty-one".