77880753779 has 8 divisors (see below), whose sum is σ = 82004641680. Its totient is φ = 73759356000.

The previous prime is 77880753751. The next prime is 77880753781. The reversal of 77880753779 is 97735708877.

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-77880753779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77880753799) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 558152 + ... + 683589.

It is an arithmetic number, because the mean of its divisors is an integer number (10250580210).

Almost surely, 2^77880753779 is an apocalyptic number.

77880753779 is a deficient number, since it is larger than the sum of its proper divisors (4123887901).

77880753779 is a wasteful number, since it uses less digits than its factorization.

77880753779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245061.

The product of its (nonzero) digits is 145212480, while the sum is 68.

The spelling of 77880753779 in words is "seventy-seven billion, eight hundred eighty million, seven hundred fifty-three thousand, seven hundred seventy-nine".