77753816560144 has 20 divisors (see below), whose sum is σ = 150673802415696. Its totient is φ = 38870254646432.

The previous prime is 77753816560129. The next prime is 77753816560183. The reversal of 77753816560144 is 44106561835777.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 415755694 + ... + 415942669.

Almost surely, 2^{77753816560144} is an apocalyptic number.

It is an amenable number.

77753816560144 is a deficient number, since it is larger than the sum of its proper divisors (72919985855552).

77753816560144 is a wasteful number, since it uses less digits than its factorization.

77753816560144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831704214 (or 831704208 counting only the distinct ones).

The product of its (nonzero) digits is 118540800, while the sum is 64.

The spelling of 77753816560144 in words is "seventy-seven trillion, seven hundred fifty-three billion, eight hundred sixteen million, five hundred sixty thousand, one hundred forty-four".