43354120549 has 4 divisors (see below), whose sum is σ = 45239082336. Its totient is φ = 41469158764.

The previous prime is 43354120547. The next prime is 43354120567. The reversal of 43354120549 is 94502145334.

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 43354120549 - 2¹ = 43354120547 is a prime.

It is a super-2 number, since 2×43354120549² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43354120543) 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, 942480859 + ... + 942480904.

It is an arithmetic number, because the mean of its divisors is an integer number (11309770584).

Almost surely, 2^43354120549 is an apocalyptic number.

It is an amenable number.

43354120549 is a deficient number, since it is larger than the sum of its proper divisors (1884961787).

43354120549 is a wasteful number, since it uses less digits than its factorization.

43354120549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884961786.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 43354120549 in words is "forty-three billion, three hundred fifty-four million, one hundred twenty thousand, five hundred forty-nine".