40519795847 has 4 divisors (see below), whose sum is σ = 40559022240. Its totient is φ = 40480569456.

The previous prime is 40519795793. The next prime is 40519795861. The reversal of 40519795847 is 74859791504.

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-40519795847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40519795247) 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, 19611647 + ... + 19613712.

It is an arithmetic number, because the mean of its divisors is an integer number (10139755560).

Almost surely, 2^40519795847 is an apocalyptic number.

40519795847 is a deficient number, since it is larger than the sum of its proper divisors (39226393).

40519795847 is a wasteful number, since it uses less digits than its factorization.

40519795847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39226392.

The product of its (nonzero) digits is 12700800, while the sum is 59.

The spelling of 40519795847 in words is "forty billion, five hundred nineteen million, seven hundred ninety-five thousand, eight hundred forty-seven".