43042351012065 has 16 divisors (see below), whose sum is σ = 76519735132800. Its totient is φ = 22955920539696.

The previous prime is 43042351012061. The next prime is 43042351012123. The reversal of 43042351012065 is 56021015324034.

43042351012065 is a `hidden beast` number, since 4 + 3 + 0 + 423 + 51 + 0 + 120 + 65 = 666.

It is not a de Polignac number, because 43042351012065 - 2² = 43042351012061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43042351012061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159416114725 + ... + 159416114994.

It is an arithmetic number, because the mean of its divisors is an integer number (4782483445800).

Almost surely, 2^{43042351012065} is an apocalyptic number.

43042351012065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

43042351012065 is a deficient number, since it is larger than the sum of its proper divisors (33477384120735).

43042351012065 is a wasteful number, since it uses less digits than its factorization.

43042351012065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318832229733 (or 318832229727 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 43042351012065 its reverse (56021015324034), we get a palindrome (99063366336099).

The spelling of 43042351012065 in words is "forty-three trillion, forty-two billion, three hundred fifty-one million, twelve thousand, sixty-five".