76778744780 has 48 divisors (see below), whose sum is σ = 161728812000. Its totient is φ = 30617645568.

The previous prime is 76778744759. The next prime is 76778744797. The reversal of 76778744780 is 8744787767.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10944554 + ... + 10951566.

It is an arithmetic number, because the mean of its divisors is an integer number (3369350250).

Almost surely, 2^76778744780 is an apocalyptic number.

It is an amenable number.

76778744780 is an abundant number, since it is smaller than the sum of its proper divisors (84950067220).

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

76778744780 is a wasteful number, since it uses less digits than its factorization.

76778744780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8618 (or 8616 counting only the distinct ones).

The product of its (nonzero) digits is 103262208, while the sum is 65.

The spelling of 76778744780 in words is "seventy-six billion, seven hundred seventy-eight million, seven hundred forty-four thousand, seven hundred eighty".