83543750069 has 8 divisors (see below), whose sum is σ = 90981094680. Its totient is φ = 76250820096.

The previous prime is 83543750051. The next prime is 83543750071. The reversal of 83543750069 is 96005734538.

It can be written as a sum of positive squares in 4 ways, for example, as 2283406225 + 81260343844 = 47785^2 + 285062^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83543750069 - 2¹² = 83543745973 is a prime.

It is a super-2 number, since 2×83543750069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83543749999 and 83543750026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83543750009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36102452 + ... + 36104765.

It is an arithmetic number, because the mean of its divisors is an integer number (11372636835).

Almost surely, 2^83543750069 is an apocalyptic number.

83543750069 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

83543750069 is a deficient number, since it is larger than the sum of its proper divisors (7437344611).

83543750069 is a wasteful number, since it uses less digits than its factorization.

83543750069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72207319.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 83543750069 in words is "eighty-three billion, five hundred forty-three million, seven hundred fifty thousand, sixty-nine".