40454555149 has 2 divisors, whose sum is σ = 40454555150. Its totient is φ = 40454555148.

The previous prime is 40454555131. The next prime is 40454555159. The reversal of 40454555149 is 94155545404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24061593924 + 16392961225 = 155118^2 + 128035^2 .

It is a cyclic number.

It is not a de Polignac number, because 40454555149 - 2⁵ = 40454555117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40454555099 and 40454555108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40454555159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20227277574 + 20227277575.

It is an arithmetic number, because the mean of its divisors is an integer number (20227277575).

Almost surely, 2^40454555149 is an apocalyptic number.

It is an amenable number.

40454555149 is a deficient number, since it is larger than the sum of its proper divisors (1).

40454555149 is an equidigital number, since it uses as much as digits as its factorization.

40454555149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440000, while the sum is 46.

The spelling of 40454555149 in words is "forty billion, four hundred fifty-four million, five hundred fifty-five thousand, one hundred forty-nine".