145331849393933 has 2 divisors, whose sum is σ = 145331849393934. Its totient is φ = 145331849393932.

The previous prime is 145331849393911. The next prime is 145331849393959. The reversal of 145331849393933 is 339393948133541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133328520959209 + 12003328434724 = 11546797^2 + 3464582^2 .

It is a cyclic number.

It is not a de Polignac number, because 145331849393933 - 2⁸ = 145331849393677 is a prime.

It is a super-2 number, since 2×145331849393933² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145331849393333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72665924696966 + 72665924696967.

It is an arithmetic number, because the mean of its divisors is an integer number (72665924696967).

Almost surely, 2^{145331849393933} is an apocalyptic number.

It is an amenable number.

145331849393933 is a deficient number, since it is larger than the sum of its proper divisors (1).

145331849393933 is an equidigital number, since it uses as much as digits as its factorization.

145331849393933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340122240, while the sum is 68.

The spelling of 145331849393933 in words is "one hundred forty-five trillion, three hundred thirty-one billion, eight hundred forty-nine million, three hundred ninety-three thousand, nine hundred thirty-three".