77571673161768 has 48 divisors (see below), whose sum is σ = 219224293722720. Its totient is φ = 24732997239456.

The previous prime is 77571673161761. The next prime is 77571673161793. The reversal of 77571673161768 is 86716137617577.

77571673161768 is a `hidden beast` number, since 7 + 7 + 571 + 6 + 7 + 31 + 6 + 17 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 77571673161696 and 77571673161705.

It is not an unprimeable number, because it can be changed into a prime (77571673161761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23421397246 + ... + 23421400557.

It is an arithmetic number, because the mean of its divisors is an integer number (4567172785890).

Almost surely, 2^{77571673161768} is an apocalyptic number.

It is an amenable number.

77571673161768 is an abundant number, since it is smaller than the sum of its proper divisors (141652620560952).

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

77571673161768 is a wasteful number, since it uses less digits than its factorization.

77571673161768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46842797838 (or 46842797831 counting only the distinct ones).

The product of its digits is 435637440, while the sum is 72.

The spelling of 77571673161768 in words is "seventy-seven trillion, five hundred seventy-one billion, six hundred seventy-three million, one hundred sixty-one thousand, seven hundred sixty-eight".