77757783320546 has 48 divisors (see below), whose sum is σ = 136753527223296. Its totient is φ = 33060965150304.

The previous prime is 77757783320489. The next prime is 77757783320713. The reversal of 77757783320546 is 64502338775777.

It is a self number, because there is not a number n which added to its sum of digits gives 77757783320546.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326302136 + ... + 326540348.

It is an arithmetic number, because the mean of its divisors is an integer number (2849031817152).

Almost surely, 2^{77757783320546} is an apocalyptic number.

77757783320546 is a deficient number, since it is larger than the sum of its proper divisors (58995743902750).

77757783320546 is a wasteful number, since it uses less digits than its factorization.

77757783320546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264583 (or 264576 counting only the distinct ones).

The product of its (nonzero) digits is 1452124800, while the sum is 71.

The spelling of 77757783320546 in words is "seventy-seven trillion, seven hundred fifty-seven billion, seven hundred eighty-three million, three hundred twenty thousand, five hundred forty-six".