43313640304452 has 144 divisors (see below), whose sum is σ = 117963832206528. Its totient is φ = 12333416659200.

The previous prime is 43313640304447. The next prime is 43313640304457. The reversal of 43313640304452 is 25440304631334.

It is an interprime number because it is at equal distance from previous prime (43313640304447) and next prime (43313640304457).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (43313640304457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2562777202 + ... + 2562794102.

It is an arithmetic number, because the mean of its divisors is an integer number (819193279212).

Almost surely, 2^{43313640304452} is an apocalyptic number.

43313640304452 is a gapful number since it is divisible by the number (42) 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 43313640304452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58981916103264).

43313640304452 is an abundant number, since it is smaller than the sum of its proper divisors (74650191902076).

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

43313640304452 is a wasteful number, since it uses less digits than its factorization.

43313640304452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31426 (or 31417 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 42.

Adding to 43313640304452 its reverse (25440304631334), we get a palindrome (68753944935786).

The spelling of 43313640304452 in words is "forty-three trillion, three hundred thirteen billion, six hundred forty million, three hundred four thousand, four hundred fifty-two".