43473012551 has 4 divisors (see below), whose sum is σ = 43481070000. Its totient is φ = 43464955104.

The previous prime is 43473012497. The next prime is 43473012553. The reversal of 43473012551 is 15521037434.

43473012551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43473012551 - 2³⁴ = 26293143367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43473012553) 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, 4020626 + ... + 4031423.

It is an arithmetic number, because the mean of its divisors is an integer number (10870267500).

Almost surely, 2^43473012551 is an apocalyptic number.

43473012551 is a deficient number, since it is larger than the sum of its proper divisors (8057449).

43473012551 is an equidigital number, since it uses as much as digits as its factorization.

43473012551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8057448.

The product of its (nonzero) digits is 50400, while the sum is 35.

Adding to 43473012551 its reverse (15521037434), we get a palindrome (58994049985).

The spelling of 43473012551 in words is "forty-three billion, four hundred seventy-three million, twelve thousand, five hundred fifty-one".