43061235457 has 4 divisors (see below), whose sum is σ = 43232794416. Its totient is φ = 42889676500.

The previous prime is 43061235449. The next prime is 43061235499. The reversal of 43061235457 is 75453216034.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43061235457 - 2³ = 43061235449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43061235407) 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, 85779103 + ... + 85779604.

It is an arithmetic number, because the mean of its divisors is an integer number (10808198604).

Almost surely, 2^43061235457 is an apocalyptic number.

It is an amenable number.

43061235457 is a deficient number, since it is larger than the sum of its proper divisors (171558959).

43061235457 is a wasteful number, since it uses less digits than its factorization.

43061235457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171558958.

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 43061235457 in words is "forty-three billion, sixty-one million, two hundred thirty-five thousand, four hundred fifty-seven".