43478743913 has 16 divisors (see below), whose sum is σ = 48507413760. Its totient is φ = 38639328000.

The previous prime is 43478743871. The next prime is 43478743921. The reversal of 43478743913 is 31934787434.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 43478743913 - 2²² = 43474549609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43478743943) 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, 159920 + ... + 335457.

It is an arithmetic number, because the mean of its divisors is an integer number (3031713360).

Almost surely, 2^43478743913 is an apocalyptic number.

It is an amenable number.

43478743913 is a deficient number, since it is larger than the sum of its proper divisors (5028669847).

43478743913 is a wasteful number, since it uses less digits than its factorization.

43478743913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495568.

The product of its digits is 6096384, while the sum is 53.

The spelling of 43478743913 in words is "forty-three billion, four hundred seventy-eight million, seven hundred forty-three thousand, nine hundred thirteen".