40745903689 has 8 divisors (see below), whose sum is σ = 42152974920. Its totient is φ = 39358512000.

The previous prime is 40745903677. The next prime is 40745903699. The reversal of 40745903689 is 98630954704.

It can be written as a sum of positive squares in 4 ways, for example, as 5789992464 + 34955911225 = 76092^2 + 186965^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 40745903689 - 2²³ = 40737515081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40745903609) 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 7 ways as a sum of consecutive naturals, for example, 4915674 + ... + 4923955.

It is an arithmetic number, because the mean of its divisors is an integer number (5269121865).

Almost surely, 2^40745903689 is an apocalyptic number.

It is an amenable number.

40745903689 is a deficient number, since it is larger than the sum of its proper divisors (1407071231).

40745903689 is a wasteful number, since it uses less digits than its factorization.

40745903689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9839771.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 40745903689 in words is "forty billion, seven hundred forty-five million, nine hundred three thousand, six hundred eighty-nine".