77646466464677 has 8 divisors (see below), whose sum is σ = 87437663116032. Its totient is φ = 68310674308800.

The previous prime is 77646466464659. The next prime is 77646466464701.

77646466464677 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 77646466464677 - 2¹⁰ = 77646466463653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77646466464607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113851123508 + ... + 113851124189.

It is an arithmetic number, because the mean of its divisors is an integer number (10929707889504).

Almost surely, 2^{77646466464677} is an apocalyptic number.

It is an amenable number.

77646466464677 is a deficient number, since it is larger than the sum of its proper divisors (9791196651355).

77646466464677 is a wasteful number, since it uses less digits than its factorization.

77646466464677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227702247739.

The product of its digits is 28677390336, while the sum is 80.

The spelling of 77646466464677 in words is "seventy-seven trillion, six hundred forty-six billion, four hundred sixty-six million, four hundred sixty-four thousand, six hundred seventy-seven".