6969804079697 has 4 divisors (see below), whose sum is σ = 6970311763620. Its totient is φ = 6969296395776.

The previous prime is 6969804079691. The next prime is 6969804079699. The reversal of 6969804079697 is 7969704089696.

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 2544149411521 + 4425654668176 = 1595039^2 + 2103724^2 .

It is a cyclic number.

It is not a de Polignac number, because 6969804079697 - 2⁶ = 6969804079633 is a prime.

It is a super-2 number, since 2×6969804079697² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6969804079691) 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, 253821368 + ... + 253848825.

It is an arithmetic number, because the mean of its divisors is an integer number (1742577940905).

Almost surely, 2^{6969804079697} is an apocalyptic number.

It is an amenable number.

6969804079697 is a deficient number, since it is larger than the sum of its proper divisors (507683923).

6969804079697 is a wasteful number, since it uses less digits than its factorization.

6969804079697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507683922.

The product of its (nonzero) digits is 2222131968, while the sum is 80.

Subtracting 6969804079697 from its reverse (7969704089696), we obtain a palindrome (999900009999).

The spelling of 6969804079697 in words is "six trillion, nine hundred sixty-nine billion, eight hundred four million, seventy-nine thousand, six hundred ninety-seven".