40635684747 has 16 divisors (see below), whose sum is σ = 68801159680. Its totient is φ = 23220391176.

The previous prime is 40635684737. The next prime is 40635684763. The reversal of 40635684747 is 74748653604.

40635684747 is a `hidden beast` number, since 4 + 0 + 6 + 3 + 568 + 4 + 74 + 7 = 666.

It is not a de Polignac number, because 40635684747 - 2¹² = 40635680651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40635684693 and 40635684702.

It is not an unprimeable number, because it can be changed into a prime (40635684737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107501623 + ... + 107502000.

It is an arithmetic number, because the mean of its divisors is an integer number (4300072480).

Almost surely, 2^40635684747 is an apocalyptic number.

40635684747 is a deficient number, since it is larger than the sum of its proper divisors (28165474933).

40635684747 is a wasteful number, since it uses less digits than its factorization.

40635684747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215003639 (or 215003633 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 54.

The spelling of 40635684747 in words is "forty billion, six hundred thirty-five million, six hundred eighty-four thousand, seven hundred forty-seven".