40464648381 has 16 divisors (see below), whose sum is σ = 54724275200. Its totient is φ = 26591833008.

The previous prime is 40464648373. The next prime is 40464648391. The reversal of 40464648381 is 18384646404.

It is not a de Polignac number, because 40464648381 - 2³ = 40464648373 is a prime.

It is a super-2 number, since 2×40464648381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40464648381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40464648311) 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 15 ways as a sum of consecutive naturals, for example, 8790 + ... + 284616.

It is an arithmetic number, because the mean of its divisors is an integer number (3420267200).

Almost surely, 2^40464648381 is an apocalyptic number.

It is an amenable number.

40464648381 is a deficient number, since it is larger than the sum of its proper divisors (14259626819).

40464648381 is a wasteful number, since it uses less digits than its factorization.

40464648381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276528.

The product of its (nonzero) digits is 1769472, while the sum is 48.

The spelling of 40464648381 in words is "forty billion, four hundred sixty-four million, six hundred forty-eight thousand, three hundred eighty-one".