77831353347 has 16 divisors (see below), whose sum is σ = 113313441792. Its totient is φ = 47127100320.

The previous prime is 77831353343. The next prime is 77831353357. The reversal of 77831353347 is 74335313877.

It is not a de Polignac number, because 77831353347 - 2² = 77831353343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77831353347.

It is not an unprimeable number, because it can be changed into a prime (77831353343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049008 + ... + 1120749.

It is an arithmetic number, because the mean of its divisors is an integer number (7082090112).

Almost surely, 2^77831353347 is an apocalyptic number.

77831353347 is a deficient number, since it is larger than the sum of its proper divisors (35482088445).

77831353347 is a wasteful number, since it uses less digits than its factorization.

77831353347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170858.

The product of its digits is 4445280, while the sum is 51.

The spelling of 77831353347 in words is "seventy-seven billion, eight hundred thirty-one million, three hundred fifty-three thousand, three hundred forty-seven".