77728670733033 has 16 divisors (see below), whose sum is σ = 115155715671040. Its totient is φ = 51818155592112.

The previous prime is 77728670733023. The next prime is 77728670733067. The reversal of 77728670733033 is 33033707682777.

It is not a de Polignac number, because 77728670733033 - 2⁶ = 77728670732969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77728670733023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25128841 + ... + 28052022.

It is an arithmetic number, because the mean of its divisors is an integer number (7197232229440).

Almost surely, 2^{77728670733033} is an apocalyptic number.

It is an amenable number.

77728670733033 is a deficient number, since it is larger than the sum of its proper divisors (37427044938007).

77728670733033 is a wasteful number, since it uses less digits than its factorization.

77728670733033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53235005 (or 53234999 counting only the distinct ones).

The product of its (nonzero) digits is 130691232, while the sum is 63.

The spelling of 77728670733033 in words is "seventy-seven trillion, seven hundred twenty-eight billion, six hundred seventy million, seven hundred thirty-three thousand, thirty-three".