80689868651 has 8 divisors (see below), whose sum is σ = 92221340640. Its totient is φ = 69159483648.

The previous prime is 80689868621. The next prime is 80689868681. The reversal of 80689868651 is 15686898608.

It is an interprime number because it is at equal distance from previous prime (80689868621) and next prime (80689868681).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80689868651 - 2⁶ = 80689868587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80689868621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105926 + ... + 415451.

It is an arithmetic number, because the mean of its divisors is an integer number (11527667580).

Almost surely, 2^80689868651 is an apocalyptic number.

80689868651 is a deficient number, since it is larger than the sum of its proper divisors (11531471989).

80689868651 is a wasteful number, since it uses less digits than its factorization.

80689868651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543493.

The product of its (nonzero) digits is 39813120, while the sum is 65.

The spelling of 80689868651 in words is "eighty billion, six hundred eighty-nine million, eight hundred sixty-eight thousand, six hundred fifty-one".