40404040451 has 2 divisors, whose sum is σ = 40404040452. Its totient is φ = 40404040450.

The previous prime is 40404040399. The next prime is 40404040543. The reversal of 40404040451 is 15404040404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40404040451 - 2⁶ = 40404040387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40404040451.

It is not a weakly prime, because it can be changed into another prime (40404040951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20202020225 + 20202020226.

It is an arithmetic number, because the mean of its divisors is an integer number (20202020226).

Almost surely, 2^40404040451 is an apocalyptic number.

40404040451 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404040451 is an equidigital number, since it uses as much as digits as its factorization.

40404040451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 40404040451 its reverse (15404040404), we get a palindrome (55808080855).

The spelling of 40404040451 in words is "forty billion, four hundred four million, forty thousand, four hundred fifty-one".