40031354646 has 48 divisors (see below), whose sum is σ = 87957780768. Its totient is φ = 13156704000.

The previous prime is 40031354641. The next prime is 40031354647. The reversal of 40031354646 is 64645313004.

40031354646 is a `hidden beast` number, since 4 + 0 + 0 + 3 + 1 + 3 + 5 + 4 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 40031354646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40031354641) 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 23 ways as a sum of consecutive naturals, for example, 392455 + ... + 483821.

It is an arithmetic number, because the mean of its divisors is an integer number (1832453766).

Almost surely, 2^40031354646 is an apocalyptic number.

40031354646 is an abundant number, since it is smaller than the sum of its proper divisors (47926426122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40031354646 is a wasteful number, since it uses less digits than its factorization.

40031354646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91717 (or 91714 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 40031354646 in words is "forty billion, thirty-one million, three hundred fifty-four thousand, six hundred forty-six".