40218404047 has 2 divisors, whose sum is σ = 40218404048. Its totient is φ = 40218404046.

The previous prime is 40218404027. The next prime is 40218404053. The reversal of 40218404047 is 74040481204.

40218404047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40218404047 - 2¹⁵ = 40218371279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40218404027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20109202023 + 20109202024.

It is an arithmetic number, because the mean of its divisors is an integer number (20109202024).

Almost surely, 2^40218404047 is an apocalyptic number.

40218404047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40218404047 is an equidigital number, since it uses as much as digits as its factorization.

40218404047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28672, while the sum is 34.

The spelling of 40218404047 in words is "forty billion, two hundred eighteen million, four hundred four thousand, forty-seven".