80684769309651 has 24 divisors (see below), whose sum is σ = 125767361239520. Its totient is φ = 49550210528256.

The previous prime is 80684769309619. The next prime is 80684769309671. The reversal of 80684769309651 is 15690396748608.

80684769309651 is a `hidden beast` number, since 8 + 0 + 6 + 8 + 476 + 93 + 0 + 9 + 65 + 1 = 666.

It is not a de Polignac number, because 80684769309651 - 2⁵ = 80684769309619 is a prime.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 80684769309651.

It is not an unprimeable number, because it can be changed into a prime (80684769309671) 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 23 ways as a sum of consecutive naturals, for example, 707965006 + ... + 708078963.

Almost surely, 2^{80684769309651} is an apocalyptic number.

80684769309651 is a deficient number, since it is larger than the sum of its proper divisors (45082591929869).

80684769309651 is a wasteful number, since it uses less digits than its factorization.

80684769309651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416044475 (or 1416044472 counting only the distinct ones).

The product of its (nonzero) digits is 470292480, while the sum is 72.

The spelling of 80684769309651 in words is "eighty trillion, six hundred eighty-four billion, seven hundred sixty-nine million, three hundred nine thousand, six hundred fifty-one".