69542368817 has 4 divisors (see below), whose sum is σ = 71238524196. Its totient is φ = 67846213440.

The previous prime is 69542368799. The next prime is 69542368829. The reversal of 69542368817 is 71886324596.

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 16404742561 + 53137626256 = 128081^2 + 230516^2 .

It is a cyclic number.

It is not a de Polignac number, because 69542368817 - 2²⁰ = 69541320241 is a prime.

It is a super-2 number, since 2×69542368817² (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 (69542368117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848077628 + ... + 848077709.

It is an arithmetic number, because the mean of its divisors is an integer number (17809631049).

Almost surely, 2^69542368817 is an apocalyptic number.

It is an amenable number.

69542368817 is a deficient number, since it is larger than the sum of its proper divisors (1696155379).

69542368817 is a wasteful number, since it uses less digits than its factorization.

69542368817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696155378.

The product of its digits is 17418240, while the sum is 59.

The spelling of 69542368817 in words is "sixty-nine billion, five hundred forty-two million, three hundred sixty-eight thousand, eight hundred seventeen".