145213050505 has 8 divisors (see below), whose sum is σ = 174557666952. Its totient is φ = 115969102848.

The previous prime is 145213050449. The next prime is 145213050547. The reversal of 145213050505 is 505050312541.

It can be written as a sum of positive squares in 4 ways, for example, as 41343495561 + 103869554944 = 203331^2 + 322288^2 .

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 145213050505 - 2⁷ = 145213050377 is a prime.

It is a Duffinian number.

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, 25164022 + ... + 25169791.

It is an arithmetic number, because the mean of its divisors is an integer number (21819708369).

Almost surely, 2^145213050505 is an apocalyptic number.

It is an amenable number.

145213050505 is a deficient number, since it is larger than the sum of its proper divisors (29344616447).

145213050505 is an equidigital number, since it uses as much as digits as its factorization.

145213050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50334395.

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 145213050505 in words is "one hundred forty-five billion, two hundred thirteen million, fifty thousand, five hundred five".