69758985809 has 4 divisors (see below), whose sum is σ = 72791985216. Its totient is φ = 66725986404.

The previous prime is 69758985799. The next prime is 69758985851. The reversal of 69758985809 is 90858985796.

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 69758985809 - 2¹² = 69758981713 is a prime.

It is a super-2 number, since 2×69758985809² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69758985209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516499669 + ... + 1516499714.

It is an arithmetic number, because the mean of its divisors is an integer number (18197996304).

Almost surely, 2^69758985809 is an apocalyptic number.

It is an amenable number.

69758985809 is a deficient number, since it is larger than the sum of its proper divisors (3032999407).

69758985809 is a wasteful number, since it uses less digits than its factorization.

69758985809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032999406.

The product of its (nonzero) digits is 391910400, while the sum is 74.

The spelling of 69758985809 in words is "sixty-nine billion, seven hundred fifty-eight million, nine hundred eighty-five thousand, eight hundred nine".