20000177677777 has 16 divisors (see below), whose sum is σ = 21922113511872. Its totient is φ = 18095681200320.

The previous prime is 20000177677747. The next prime is 20000177677793. The reversal of 20000177677777 is 77777677100002.

It is a cyclic number.

It is not a de Polignac number, because 20000177677777 - 2²³ = 20000169289169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20000177677747) 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, 1070023 + ... + 6414460.

It is an arithmetic number, because the mean of its divisors is an integer number (1370132094492).

Almost surely, 2^{20000177677777} is an apocalyptic number.

It is an amenable number.

20000177677777 is a deficient number, since it is larger than the sum of its proper divisors (1921935834095).

20000177677777 is a wasteful number, since it uses less digits than its factorization.

20000177677777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7485648.

The product of its (nonzero) digits is 9882516, while the sum is 58.

The spelling of 20000177677777 in words is "twenty trillion, one hundred seventy-seven million, six hundred seventy-seven thousand, seven hundred seventy-seven".