77486666668477 has 8 divisors (see below), whose sum is σ = 84713481256320. Its totient is φ = 70290280774560.

The previous prime is 77486666668457. The next prime is 77486666668519.

77486666668477 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 77486666668477 - 2¹¹ = 77486666666429 is a prime.

It is a super-2 number, since 2×77486666668477² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77486666668427) 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, 7607168152 + ... + 7607178337.

It is an arithmetic number, because the mean of its divisors is an integer number (10589185157040).

Almost surely, 2^{77486666668477} is an apocalyptic number.

It is an amenable number.

77486666668477 is a deficient number, since it is larger than the sum of its proper divisors (7226814587843).

77486666668477 is a wasteful number, since it uses less digits than its factorization.

77486666668477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15214346963.

The product of its digits is 114709561344, while the sum is 88.

The spelling of 77486666668477 in words is "seventy-seven trillion, four hundred eighty-six billion, six hundred sixty-six million, six hundred sixty-eight thousand, four hundred seventy-seven".