69681678861 has 4 divisors (see below), whose sum is σ = 92908905152. Its totient is φ = 46454452572.

The previous prime is 69681678769. The next prime is 69681678901. The reversal of 69681678861 is 16887618696.

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 not a de Polignac number, because 69681678861 - 2¹⁵ = 69681646093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69681678792 and 69681678801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69681678361) 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, 11613613141 + ... + 11613613146.

It is an arithmetic number, because the mean of its divisors is an integer number (23227226288).

Almost surely, 2^69681678861 is an apocalyptic number.

It is an amenable number.

69681678861 is a deficient number, since it is larger than the sum of its proper divisors (23227226291).

69681678861 is a wasteful number, since it uses less digits than its factorization.

69681678861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23227226290.

The product of its digits is 41803776, while the sum is 66.

The spelling of 69681678861 in words is "sixty-nine billion, six hundred eighty-one million, six hundred seventy-eight thousand, eight hundred sixty-one".