77773546928 has 40 divisors (see below), whose sum is σ = 187868570880. Its totient is φ = 30301381440.

The previous prime is 77773546927. The next prime is 77773546943. The reversal of 77773546928 is 82964537777.

It is not an unprimeable number, because it can be changed into a prime (77773546927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31562708 + ... + 31565171.

It is an arithmetic number, because the mean of its divisors is an integer number (4696714272).

Almost surely, 2^77773546928 is an apocalyptic number.

It is an amenable number.

77773546928 is an abundant number, since it is smaller than the sum of its proper divisors (110095023952).

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

77773546928 is a wasteful number, since it uses less digits than its factorization.

77773546928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63127905 (or 63127899 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 65.

The spelling of 77773546928 in words is "seventy-seven billion, seven hundred seventy-three million, five hundred forty-six thousand, nine hundred twenty-eight".