77522330647 has 8 divisors (see below), whose sum is σ = 78630235920. Its totient is φ = 76419689280.

The previous prime is 77522330609. The next prime is 77522330653. The reversal of 77522330647 is 74603322577.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77522330647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77522330597 and 77522330606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77522330747) 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, 1286308 + ... + 1345225.

It is an arithmetic number, because the mean of its divisors is an integer number (9828779490).

Almost surely, 2^77522330647 is an apocalyptic number.

77522330647 is a deficient number, since it is larger than the sum of its proper divisors (1107905273).

77522330647 is a wasteful number, since it uses less digits than its factorization.

77522330647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2631953.

The product of its (nonzero) digits is 1481760, while the sum is 46.

The spelling of 77522330647 in words is "seventy-seven billion, five hundred twenty-two million, three hundred thirty thousand, six hundred forty-seven".