40405742769 has 8 divisors (see below), whose sum is σ = 61570655680. Its totient is φ = 23088995856.

The previous prime is 40405742731. The next prime is 40405742771. The reversal of 40405742769 is 96724750404.

40405742769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40405742769 - 2⁹ = 40405742257 is a prime.

It is a super-2 number, since 2×40405742769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40405742569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962041474 + ... + 962041515.

It is an arithmetic number, because the mean of its divisors is an integer number (7696331960).

Almost surely, 2^40405742769 is an apocalyptic number.

It is an amenable number.

40405742769 is a deficient number, since it is larger than the sum of its proper divisors (21164912911).

40405742769 is a wasteful number, since it uses less digits than its factorization.

40405742769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1924082999.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 40405742769 in words is "forty billion, four hundred five million, seven hundred forty-two thousand, seven hundred sixty-nine".