43340520749 has 16 divisors (see below), whose sum is σ = 46176480000. Its totient is φ = 40537104384.

The previous prime is 43340520731. The next prime is 43340520757. The reversal of 43340520749 is 94702504334.

It is not a de Polignac number, because 43340520749 - 2⁸ = 43340520493 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 (43340520709) 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, 2016749 + ... + 2038125.

It is an arithmetic number, because the mean of its divisors is an integer number (2886030000).

Almost surely, 2^43340520749 is an apocalyptic number.

It is an amenable number.

43340520749 is a deficient number, since it is larger than the sum of its proper divisors (2835959251).

43340520749 is a wasteful number, since it uses less digits than its factorization.

43340520749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22132.

The product of its (nonzero) digits is 362880, while the sum is 41.

The spelling of 43340520749 in words is "forty-three billion, three hundred forty million, five hundred twenty thousand, seven hundred forty-nine".