6647320077546 has 16 divisors (see below), whose sum is σ = 13295841357600. Its totient is φ = 2215573158768.

The previous prime is 6647320077511. The next prime is 6647320077557. The reversal of 6647320077546 is 6457700237466.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49978156 + ... + 50110983.

It is an arithmetic number, because the mean of its divisors is an integer number (830990084850).

Almost surely, 2^{6647320077546} is an apocalyptic number.

6647320077546 is an abundant number, since it is smaller than the sum of its proper divisors (6648521280054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6647320077546 is a wasteful number, since it uses less digits than its factorization.

6647320077546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100100213.

The product of its (nonzero) digits is 35562240, while the sum is 57.

The spelling of 6647320077546 in words is "six trillion, six hundred forty-seven billion, three hundred twenty million, seventy-seven thousand, five hundred forty-six".