40045432545 has 24 divisors (see below), whose sum is σ = 69562037376. Its totient is φ = 21311424288.

The previous prime is 40045432523. The next prime is 40045432579. The reversal of 40045432545 is 54523454004.

40045432545 is a `hidden beast` number, since 40 + 0 + 45 + 4 + 32 + 545 = 666.

40045432545 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 40045432545 - 2⁷ = 40045432417 is a prime.

It is a super-2 number, since 2×40045432545² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 940179 + ... + 981848.

It is an arithmetic number, because the mean of its divisors is an integer number (2898418224).

Almost surely, 2^40045432545 is an apocalyptic number.

40045432545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40045432545 is a deficient number, since it is larger than the sum of its proper divisors (29516604831).

40045432545 is a wasteful number, since it uses less digits than its factorization.

40045432545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1922501 (or 1922498 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 36.

Adding to 40045432545 its reverse (54523454004), we get a palindrome (94568886549).

The spelling of 40045432545 in words is "forty billion, forty-five million, four hundred thirty-two thousand, five hundred forty-five".