40906688747 has 4 divisors (see below), whose sum is σ = 40907519856. Its totient is φ = 40905857640.

The previous prime is 40906688737. The next prime is 40906688783. The reversal of 40906688747 is 74788660904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40906688747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40906688737) 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 3 ways as a sum of consecutive naturals, for example, 336743 + ... + 441824.

It is an arithmetic number, because the mean of its divisors is an integer number (10226879964).

Almost surely, 2^40906688747 is an apocalyptic number.

40906688747 is a deficient number, since it is larger than the sum of its proper divisors (831109).

40906688747 is an equidigital number, since it uses as much as digits as its factorization.

40906688747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831108.

The product of its (nonzero) digits is 16257024, while the sum is 59.

The spelling of 40906688747 in words is "forty billion, nine hundred six million, six hundred eighty-eight thousand, seven hundred forty-seven".