145413321605 has 8 divisors (see below), whose sum is σ = 174498636312. Its totient is φ = 116328890368.

The previous prime is 145413321593. The next prime is 145413321619. The reversal of 145413321605 is 506123314541.

It can be written as a sum of positive squares in 4 ways, for example, as 17330932609 + 128082388996 = 131647^2 + 357886^2 .

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 145413321605 - 2⁶ = 145413321541 is a prime.

It is a super-2 number, since 2×145413321605² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 221957 + ... + 583173.

It is an arithmetic number, because the mean of its divisors is an integer number (21812329539).

Almost surely, 2^145413321605 is an apocalyptic number.

It is an amenable number.

145413321605 is a deficient number, since it is larger than the sum of its proper divisors (29085314707).

145413321605 is an equidigital number, since it uses as much as digits as its factorization.

145413321605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441735.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 145413321605 in words is "one hundred forty-five billion, four hundred thirteen million, three hundred twenty-one thousand, six hundred five".