145293320957 has 2 divisors, whose sum is σ = 145293320958. Its totient is φ = 145293320956.

The previous prime is 145293320947. The next prime is 145293320971. The reversal of 145293320957 is 759023392541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81378402361 + 63914918596 = 285269^2 + 252814^2 .

It is a cyclic number.

It is not a de Polignac number, because 145293320957 - 2²⁰ = 145292272381 is a prime.

It is a super-2 number, since 2×145293320957² (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 (145293320947) 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, 72646660478 + 72646660479.

It is an arithmetic number, because the mean of its divisors is an integer number (72646660479).

Almost surely, 2^145293320957 is an apocalyptic number.

It is an amenable number.

145293320957 is a deficient number, since it is larger than the sum of its proper divisors (1).

145293320957 is an equidigital number, since it uses as much as digits as its factorization.

145293320957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2041200, while the sum is 50.

The spelling of 145293320957 in words is "one hundred forty-five billion, two hundred ninety-three million, three hundred twenty thousand, nine hundred fifty-seven".