145015550220305 has 8 divisors (see below), whose sum is σ = 174020329189800. Its totient is φ = 116011327559296.

The previous prime is 145015550220227. The next prime is 145015550220313. The reversal of 145015550220305 is 503022055510541.

It can be written as a sum of positive squares in 4 ways, for example, as 91665439678849 + 53350110541456 = 9574207^2 + 7304116^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145015550220305 - 2¹² = 145015550216209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138503420 + ... + 139546509.

It is an arithmetic number, because the mean of its divisors is an integer number (21752541148725).

Almost surely, 2^{145015550220305} is an apocalyptic number.

It is an amenable number.

145015550220305 is a deficient number, since it is larger than the sum of its proper divisors (29004778969495).

145015550220305 is a wasteful number, since it uses less digits than its factorization.

145015550220305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278154243.

The product of its (nonzero) digits is 150000, while the sum is 38.

The spelling of 145015550220305 in words is "one hundred forty-five trillion, fifteen billion, five hundred fifty million, two hundred twenty thousand, three hundred five".