76686467729 has 4 divisors (see below), whose sum is σ = 76687973376. Its totient is φ = 76684962084.

The previous prime is 76686467719. The next prime is 76686467771. The reversal of 76686467729 is 92776468667.

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 a cyclic number.

It is not a de Polignac number, because 76686467729 - 2¹⁶ = 76686402193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76686467719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 673649 + ... + 779214.

It is an arithmetic number, because the mean of its divisors is an integer number (19171993344).

Almost surely, 2^76686467729 is an apocalyptic number.

It is an amenable number.

76686467729 is a deficient number, since it is larger than the sum of its proper divisors (1505647).

76686467729 is a wasteful number, since it uses less digits than its factorization.

76686467729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505646.

The product of its digits is 256048128, while the sum is 68.

The spelling of 76686467729 in words is "seventy-six billion, six hundred eighty-six million, four hundred sixty-seven thousand, seven hundred twenty-nine".