40456551444 has 48 divisors (see below), whose sum is σ = 94920501312. Its totient is φ = 13411107072.

The previous prime is 40456551407. The next prime is 40456551449. The reversal of 40456551444 is 44415565404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40456551396 and 40456551405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40456551449) 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, 2376507 + ... + 2393469.

It is an arithmetic number, because the mean of its divisors is an integer number (1977510444).

Almost surely, 2^40456551444 is an apocalyptic number.

It is an amenable number.

40456551444 is an abundant number, since it is smaller than the sum of its proper divisors (54463949868).

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

40456551444 is a wasteful number, since it uses less digits than its factorization.

40456551444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18056 (or 18054 counting only the distinct ones).

The product of its (nonzero) digits is 768000, while the sum is 42.

The spelling of 40456551444 in words is "forty billion, four hundred fifty-six million, five hundred fifty-one thousand, four hundred forty-four".