40404904543 has 2 divisors, whose sum is σ = 40404904544. Its totient is φ = 40404904542.

The previous prime is 40404904489. The next prime is 40404904571. The reversal of 40404904543 is 34540940404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40404904543 - 2²¹ = 40402807391 is a prime.

It is a super-2 number, since 2×40404904543² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40404904643) 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 as a sum of consecutive naturals, namely, 20202452271 + 20202452272.

It is an arithmetic number, because the mean of its divisors is an integer number (20202452272).

Almost surely, 2^40404904543 is an apocalyptic number.

40404904543 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404904543 is an equidigital number, since it uses as much as digits as its factorization.

40404904543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 40404904543 in words is "forty billion, four hundred four million, nine hundred four thousand, five hundred forty-three".