40217478047 has 2 divisors, whose sum is σ = 40217478048. Its totient is φ = 40217478046.

The previous prime is 40217477947. The next prime is 40217478071. The reversal of 40217478047 is 74087471204.

40217478047 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 40217478047 - 2²⁰ = 40216429471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40217477989 and 40217478007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40217478097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20108739023 + 20108739024.

It is an arithmetic number, because the mean of its divisors is an integer number (20108739024).

Almost surely, 2^40217478047 is an apocalyptic number.

40217478047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40217478047 is an equidigital number, since it uses as much as digits as its factorization.

40217478047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 351232, while the sum is 44.

The spelling of 40217478047 in words is "forty billion, two hundred seventeen million, four hundred seventy-eight thousand, forty-seven".