69199818445 has 4 divisors (see below), whose sum is σ = 83039782140. Its totient is φ = 55359854752.

The previous prime is 69199818323. The next prime is 69199818449. The reversal of 69199818445 is 54481899196.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25563532996 + 43636285449 = 159886^2 + 208893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69199818445 is a prime.

It is a super-2 number, since 2×69199818445² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69199818449) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6919981840 + ... + 6919981849.

It is an arithmetic number, because the mean of its divisors is an integer number (20759945535).

Almost surely, 2^69199818445 is an apocalyptic number.

It is an amenable number.

69199818445 is a deficient number, since it is larger than the sum of its proper divisors (13839963695).

69199818445 is a wasteful number, since it uses less digits than its factorization.

69199818445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13839963694.

The product of its digits is 22394880, while the sum is 64.

The spelling of 69199818445 in words is "sixty-nine billion, one hundred ninety-nine million, eight hundred eighteen thousand, four hundred forty-five".