77413231477 has 8 divisors (see below), whose sum is σ = 80797613400. Its totient is φ = 74100099840.

The previous prime is 77413231459. The next prime is 77413231501.

77413231477 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 2471978961 + 74941252516 = 49719^2 + 273754^2 .

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 77413231477 - 2²³ = 77404842869 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 (77413201477) 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, 17810352 + ... + 17814697.

It is an arithmetic number, because the mean of its divisors is an integer number (10099701675).

Almost surely, 2^77413231477 is an apocalyptic number.

It is an amenable number.

77413231477 is a deficient number, since it is larger than the sum of its proper divisors (3384381923).

77413231477 is a wasteful number, since it uses less digits than its factorization.

77413231477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35625143.

The product of its digits is 691488, while the sum is 46.

The spelling of 77413231477 in words is "seventy-seven billion, four hundred thirteen million, two hundred thirty-one thousand, four hundred seventy-seven".