43949117534 has 16 divisors (see below), whose sum is σ = 76878924000. Its totient is φ = 18835335792.

The previous prime is 43949117521. The next prime is 43949117551. The reversal of 43949117534 is 43571194934.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32032199 + ... + 32033570.

It is an arithmetic number, because the mean of its divisors is an integer number (4804932750).

Almost surely, 2^43949117534 is an apocalyptic number.

43949117534 is a deficient number, since it is larger than the sum of its proper divisors (32929806466).

43949117534 is an equidigital number, since it uses as much as digits as its factorization.

43949117534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64065792 (or 64065778 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The spelling of 43949117534 in words is "forty-three billion, nine hundred forty-nine million, one hundred seventeen thousand, five hundred thirty-four".