345988177777 has 16 divisors (see below), whose sum is σ = 392005785600. Its totient is φ = 302624783440.

The previous prime is 345988177771. The next prime is 345988177849. The reversal of 345988177777 is 777771889543.

It is a cyclic number.

It is not a de Polignac number, because 345988177777 - 2⁷ = 345988177649 is a prime.

It is a super-2 number, since 2×345988177777² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345988177771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5640877 + ... + 5701882.

It is an arithmetic number, because the mean of its divisors is an integer number (24500361600).

Almost surely, 2^345988177777 is an apocalyptic number.

It is an amenable number.

345988177777 is a deficient number, since it is larger than the sum of its proper divisors (46017607823).

345988177777 is a wasteful number, since it uses less digits than its factorization.

345988177777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11342876.

The product of its digits is 580849920, while the sum is 73.

The spelling of 345988177777 in words is "three hundred forty-five billion, nine hundred eighty-eight million, one hundred seventy-seven thousand, seven hundred seventy-seven".