40034441664 has 84 divisors (see below), whose sum is σ = 131144583024. Its totient is φ = 11438410752.

The previous prime is 40034441653. The next prime is 40034441683. The reversal of 40034441664 is 46614443004.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4960557 + ... + 4968620.

It is an arithmetic number, because the mean of its divisors is an integer number (1561245036).

Almost surely, 2^40034441664 is an apocalyptic number.

It is an amenable number.

40034441664 is an abundant number, since it is smaller than the sum of its proper divisors (91110141360).

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

40034441664 is a wasteful number, since it uses less digits than its factorization.

40034441664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9929202 (or 9929189 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 40034441664 its reverse (46614443004), we get a palindrome (86648884668).

The spelling of 40034441664 in words is "forty billion, thirty-four million, four hundred forty-one thousand, six hundred sixty-four".