40849508816 has 10 divisors (see below), whose sum is σ = 79145923362. Its totient is φ = 20424754400.

The previous prime is 40849508813. The next prime is 40849508857. The reversal of 40849508816 is 61880594804.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 29895793216 + 10953715600 = 172904^2 + 104660^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40849508813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276547135 + ... + 1276547166.

Almost surely, 2^40849508816 is an apocalyptic number.

It is an amenable number.

40849508816 is a deficient number, since it is larger than the sum of its proper divisors (38296414546).

40849508816 is a wasteful number, since it uses less digits than its factorization.

40849508816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553094309 (or 2553094303 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 40849508816 in words is "forty billion, eight hundred forty-nine million, five hundred eight thousand, eight hundred sixteen".