43506306475949 has 4 divisors (see below), whose sum is σ = 43506406994400. Its totient is φ = 43506205957500.

The previous prime is 43506306475909. The next prime is 43506306475969. The reversal of 43506306475949 is 94957460360534.

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 43506306475949 - 2²⁰ = 43506305427373 is a prime.

It is a super-3 number, since 3×43506306475949³ (a number of 42 digits) contains 333 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 (43506306475909) 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, 49607177 + ... + 50476574.

It is an arithmetic number, because the mean of its divisors is an integer number (10876601748600).

Almost surely, 2^{43506306475949} is an apocalyptic number.

It is an amenable number.

43506306475949 is a deficient number, since it is larger than the sum of its proper divisors (100518451).

43506306475949 is a wasteful number, since it uses less digits than its factorization.

43506306475949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100518450.

The product of its (nonzero) digits is 293932800, while the sum is 65.

The spelling of 43506306475949 in words is "forty-three trillion, five hundred six billion, three hundred six million, four hundred seventy-five thousand, nine hundred forty-nine".