145252444516505 has 8 divisors (see below), whose sum is σ = 174303031705152. Its totient is φ = 116201890089648.

The previous prime is 145252444516471. The next prime is 145252444516507. The reversal of 145252444516505 is 505615444252541.

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 145252444516505 - 2⁴² = 140854398005401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145252444516507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2938052 + ... + 17295578.

It is an arithmetic number, because the mean of its divisors is an integer number (21787878963144).

Almost surely, 2^{145252444516505} is an apocalyptic number.

It is an amenable number.

145252444516505 is a deficient number, since it is larger than the sum of its proper divisors (29050587188647).

145252444516505 is a wasteful number, since it uses less digits than its factorization.

145252444516505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16380895.

The product of its (nonzero) digits is 19200000, while the sum is 53.

The spelling of 145252444516505 in words is "one hundred forty-five trillion, two hundred fifty-two billion, four hundred forty-four million, five hundred sixteen thousand, five hundred five".