77771414747 has 4 divisors (see below), whose sum is σ = 83753831280. Its totient is φ = 71788998216.

The previous prime is 77771414731. The next prime is 77771414771. The reversal of 77771414747 is 74741417777.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 77771414747 - 2⁴ = 77771414731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77771414692 and 77771414701.

It is not an unprimeable number, because it can be changed into a prime (77771494747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2991208247 + ... + 2991208272.

It is an arithmetic number, because the mean of its divisors is an integer number (20938457820).

Almost surely, 2^77771414747 is an apocalyptic number.

77771414747 is a deficient number, since it is larger than the sum of its proper divisors (5982416533).

77771414747 is a wasteful number, since it uses less digits than its factorization.

77771414747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5982416532.

The product of its digits is 7529536, while the sum is 56.

The spelling of 77771414747 in words is "seventy-seven billion, seven hundred seventy-one million, four hundred fourteen thousand, seven hundred forty-seven".