77863824417 has 8 divisors (see below), whose sum is σ = 104770895680. Its totient is φ = 51432984720.

The previous prime is 77863824407. The next prime is 77863824443. The reversal of 77863824417 is 71442836877.

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

It is not a de Polignac number, because 77863824417 - 2¹⁰ = 77863823393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77863824407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119057509 + ... + 119058162.

It is an arithmetic number, because the mean of its divisors is an integer number (13096361960).

Almost surely, 2^77863824417 is an apocalyptic number.

It is an amenable number.

77863824417 is a deficient number, since it is larger than the sum of its proper divisors (26907071263).

77863824417 is a wasteful number, since it uses less digits than its factorization.

77863824417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238115783.

The product of its digits is 12644352, while the sum is 57.

The spelling of 77863824417 in words is "seventy-seven billion, eight hundred sixty-three million, eight hundred twenty-four thousand, four hundred seventeen".