43774151640 has 128 divisors (see below), whose sum is σ = 132223795200. Its totient is φ = 11593198080.

The previous prime is 43774151639. The next prime is 43774151653. The reversal of 43774151640 is 4615147734.

It is a junction number, because it is equal to n+sod(n) for n = 43774151592 and 43774151601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19549641 + ... + 19551879.

It is an arithmetic number, because the mean of its divisors is an integer number (1032998400).

Almost surely, 2^43774151640 is an apocalyptic number.

43774151640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43774151640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66111897600).

43774151640 is an abundant number, since it is smaller than the sum of its proper divisors (88449643560).

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

43774151640 is a wasteful number, since it uses less digits than its factorization.

43774151640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297 (or 3293 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 43774151640 in words is "forty-three billion, seven hundred seventy-four million, one hundred fifty-one thousand, six hundred forty".