145436661441 has 12 divisors (see below), whose sum is σ = 210095460432. Its totient is φ = 96948413016.

The previous prime is 145436661379. The next prime is 145436661457. The reversal of 145436661441 is 144166634541.

145436661441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145436661441 - 2¹⁰ = 145436660417 is a prime.

It is a super-2 number, since 2×145436661441² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145436661841) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 681051 + ... + 868736.

It is an arithmetic number, because the mean of its divisors is an integer number (17507955036).

Almost surely, 2^145436661441 is an apocalyptic number.

It is an amenable number.

145436661441 is a deficient number, since it is larger than the sum of its proper divisors (64658798991).

145436661441 is a wasteful number, since it uses less digits than its factorization.

145436661441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560220 (or 1560217 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 145436661441 in words is "one hundred forty-five billion, four hundred thirty-six million, six hundred sixty-one thousand, four hundred forty-one".