43161588645 has 32 divisors (see below), whose sum is σ = 78932268288. Its totient is φ = 19728956928.

The previous prime is 43161588623. The next prime is 43161588649. The reversal of 43161588645 is 54688516134.

It is a happy number.

It is not a de Polignac number, because 43161588645 - 2⁶ = 43161588581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43161588649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1512247 + ... + 1540523.

It is an arithmetic number, because the mean of its divisors is an integer number (2466633384).

Almost surely, 2^43161588645 is an apocalyptic number.

It is an amenable number.

43161588645 is a deficient number, since it is larger than the sum of its proper divisors (35770679643).

43161588645 is a wasteful number, since it uses less digits than its factorization.

43161588645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42829.

The product of its digits is 2764800, while the sum is 51.

The spelling of 43161588645 in words is "forty-three billion, one hundred sixty-one million, five hundred eighty-eight thousand, six hundred forty-five".