69898733249 has 4 divisors (see below), whose sum is σ = 69918932820. Its totient is φ = 69878533680.

The previous prime is 69898733239. The next prime is 69898733297. The reversal of 69898733249 is 94233789896.

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 32115148849 + 37783584400 = 179207^2 + 194380^2 .

It is a cyclic number.

It is not a de Polignac number, because 69898733249 - 2²⁴ = 69881956033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69898733239) 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, 10094594 + ... + 10101515.

It is an arithmetic number, because the mean of its divisors is an integer number (17479733205).

Almost surely, 2^69898733249 is an apocalyptic number.

It is an amenable number.

69898733249 is a deficient number, since it is larger than the sum of its proper divisors (20199571).

69898733249 is a wasteful number, since it uses less digits than its factorization.

69898733249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20199570.

The product of its digits is 141087744, while the sum is 68.

The spelling of 69898733249 in words is "sixty-nine billion, eight hundred ninety-eight million, seven hundred thirty-three thousand, two hundred forty-nine".