40043214997 has 2 divisors, whose sum is σ = 40043214998. Its totient is φ = 40043214996.

The previous prime is 40043214973. The next prime is 40043215013. The reversal of 40043214997 is 79941234004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38995980676 + 1047234321 = 197474^2 + 32361^2 .

It is a cyclic number.

It is not a de Polignac number, because 40043214997 - 2²³ = 40034826389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40043214947) 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, 20021607498 + 20021607499.

It is an arithmetic number, because the mean of its divisors is an integer number (20021607499).

Almost surely, 2^40043214997 is an apocalyptic number.

It is an amenable number.

40043214997 is a deficient number, since it is larger than the sum of its proper divisors (1).

40043214997 is an equidigital number, since it uses as much as digits as its factorization.

40043214997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 43.

The spelling of 40043214997 in words is "forty billion, forty-three million, two hundred fourteen thousand, nine hundred ninety-seven".