40043894753 has 8 divisors (see below), whose sum is σ = 41428255680. Its totient is φ = 38659769680.

The previous prime is 40043894747. The next prime is 40043894773. The reversal of 40043894753 is 35749834004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40043894753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40043894698 and 40043894707.

It is not an unprimeable number, because it can be changed into a prime (40043894713) 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 7 ways as a sum of consecutive naturals, for example, 330068 + ... + 434778.

It is an arithmetic number, because the mean of its divisors is an integer number (5178531960).

Almost surely, 2^40043894753 is an apocalyptic number.

It is an amenable number.

40043894753 is a deficient number, since it is larger than the sum of its proper divisors (1384360927).

40043894753 is a wasteful number, since it uses less digits than its factorization.

40043894753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117927.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 40043894753 in words is "forty billion, forty-three million, eight hundred ninety-four thousand, seven hundred fifty-three".