40388931814 has 64 divisors (see below), whose sum is σ = 76418256384. Its totient is φ = 15552000000.

The previous prime is 40388931811. The next prime is 40388931833. The reversal of 40388931814 is 41813988304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40388931811) 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 31 ways as a sum of consecutive naturals, for example, 9968089 + ... + 9972139.

It is an arithmetic number, because the mean of its divisors is an integer number (1194035256).

Almost surely, 2^40388931814 is an apocalyptic number.

40388931814 is a deficient number, since it is larger than the sum of its proper divisors (36029324570).

40388931814 is a wasteful number, since it uses less digits than its factorization.

40388931814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 40388931814 in words is "forty billion, three hundred eighty-eight million, nine hundred thirty-one thousand, eight hundred fourteen".