40635212247 has 40 divisors (see below), whose sum is σ = 69404101536. Its totient is φ = 23209944768.

The previous prime is 40635212237. The next prime is 40635212263. The reversal of 40635212247 is 74221253604.

40635212247 is a `hidden beast` number, since 4 + 0 + 635 + 2 + 12 + 2 + 4 + 7 = 666.

It is not a de Polignac number, because 40635212247 - 2²³ = 40626823639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40635212237) 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 in 39 ways as a sum of consecutive naturals, for example, 1389993 + ... + 1418925.

Almost surely, 2^40635212247 is an apocalyptic number.

40635212247 is a deficient number, since it is larger than the sum of its proper divisors (28768889289).

40635212247 is a wasteful number, since it uses less digits than its factorization.

40635212247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31429 (or 31420 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 40635212247 in words is "forty billion, six hundred thirty-five million, two hundred twelve thousand, two hundred forty-seven".