145842669505 has 32 divisors (see below), whose sum is σ = 190304962848. Its totient is φ = 106657689600.

The previous prime is 145842669491. The next prime is 145842669517. The reversal of 145842669505 is 505966248541.

It is a happy number.

145842669505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 40907489536 + 104935179969 = 202256^2 + 323937^2 .

It is not a de Polignac number, because 145842669505 - 2⁵ = 145842669473 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2809647 + ... + 2861083.

It is an arithmetic number, because the mean of its divisors is an integer number (5947030089).

Almost surely, 2^145842669505 is an apocalyptic number.

It is an amenable number.

145842669505 is a deficient number, since it is larger than the sum of its proper divisors (44462293343).

145842669505 is a wasteful number, since it uses less digits than its factorization.

145842669505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51877.

The product of its (nonzero) digits is 10368000, while the sum is 55.

The spelling of 145842669505 in words is "one hundred forty-five billion, eight hundred forty-two million, six hundred sixty-nine thousand, five hundred five".