43654441428 has 192 divisors, whose sum is σ = 126200166400. Its totient is φ = 12959170560.

The previous prime is 43654441427. The next prime is 43654441429. The reversal of 43654441428 is 82414445634.

It is a happy number.

43654441428 is a `hidden beast` number, since 4 + 3 + 65 + 444 + 142 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (43654441427) and next prime (43654441429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43654441427) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16233108 + ... + 16235796.

Almost surely, 2^43654441428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43654441428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63100083200).

43654441428 is an abundant number, since it is smaller than the sum of its proper divisors (82545724972).

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

43654441428 is a wasteful number, since it uses less digits than its factorization.

43654441428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119 (or 3111 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 45.

The spelling of 43654441428 in words is "forty-three billion, six hundred fifty-four million, four hundred forty-one thousand, four hundred twenty-eight".