77881285163 has 8 divisors (see below), whose sum is σ = 87257656560. Its totient is φ = 68887622880.

The previous prime is 77881285129. The next prime is 77881285189. The reversal of 77881285163 is 36158218877.

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 77881285163 - 2¹⁴ = 77881268779 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77881285099 and 77881285108.

It is not an unprimeable number, because it can be changed into a prime (77881285663) 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, 95676848 + ... + 95677661.

It is an arithmetic number, because the mean of its divisors is an integer number (10907207070).

Almost surely, 2^77881285163 is an apocalyptic number.

77881285163 is a deficient number, since it is larger than the sum of its proper divisors (9376371397).

77881285163 is a wasteful number, since it uses less digits than its factorization.

77881285163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191354557.

The product of its digits is 4515840, while the sum is 56.

The spelling of 77881285163 in words is "seventy-seven billion, eight hundred eighty-one million, two hundred eighty-five thousand, one hundred sixty-three".