43513453251043 has 4 divisors (see below), whose sum is σ = 43513529119720. Its totient is φ = 43513377382368.

The previous prime is 43513453251041. The next prime is 43513453251053. The reversal of 43513453251043 is 34015235431534.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43513453251043 - 2¹ = 43513453251041 is a prime.

It is a super-2 number, since 2×43513453251043² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43513453251041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37067430 + ... + 38223307.

It is an arithmetic number, because the mean of its divisors is an integer number (10878382279930).

Almost surely, 2^{43513453251043} is an apocalyptic number.

43513453251043 is a deficient number, since it is larger than the sum of its proper divisors (75868677).

43513453251043 is an equidigital number, since it uses as much as digits as its factorization.

43513453251043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75868676.

The product of its (nonzero) digits is 1296000, while the sum is 43.

Adding to 43513453251043 its reverse (34015235431534), we get a palindrome (77528688682577).

The spelling of 43513453251043 in words is "forty-three trillion, five hundred thirteen billion, four hundred fifty-three million, two hundred fifty-one thousand, forty-three".