40055104644 has 12 divisors (see below), whose sum is σ = 93461910864. Its totient is φ = 13351701544.

The previous prime is 40055104637. The next prime is 40055104651. The reversal of 40055104644 is 44640155004.

It is an interprime number because it is at equal distance from previous prime (40055104637) and next prime (40055104651).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×40055104644² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668962682 + ... + 1668962705.

It is an arithmetic number, because the mean of its divisors is an integer number (7788492572).

Almost surely, 2^40055104644 is an apocalyptic number.

It is an amenable number.

40055104644 is an abundant number, since it is smaller than the sum of its proper divisors (53406806220).

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

40055104644 is a wasteful number, since it uses less digits than its factorization.

40055104644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3337925394 (or 3337925392 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 40055104644 its reverse (44640155004), we get a palindrome (84695259648).

The spelling of 40055104644 in words is "forty billion, fifty-five million, one hundred four thousand, six hundred forty-four".