145180077258221 has 2 divisors, whose sum is σ = 145180077258222. Its totient is φ = 145180077258220.

The previous prime is 145180077258197. The next prime is 145180077258509. The reversal of 145180077258221 is 122852770081541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145049384886025 + 130692372196 = 12043645^2 + 361514^2 .

It is a cyclic number.

It is not a de Polignac number, because 145180077258221 - 2⁶ = 145180077258157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145180077255221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72590038629110 + 72590038629111.

It is an arithmetic number, because the mean of its divisors is an integer number (72590038629111).

Almost surely, 2^{145180077258221} is an apocalyptic number.

It is an amenable number.

145180077258221 is a deficient number, since it is larger than the sum of its proper divisors (1).

145180077258221 is an equidigital number, since it uses as much as digits as its factorization.

145180077258221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2508800, while the sum is 53.

The spelling of 145180077258221 in words is "one hundred forty-five trillion, one hundred eighty billion, seventy-seven million, two hundred fifty-eight thousand, two hundred twenty-one".