20344702577677 has 16 divisors (see below), whose sum is σ = 20813614986240. Its totient is φ = 19877299825968.

The previous prime is 20344702577659. The next prime is 20344702577699. The reversal of 20344702577677 is 77677520744302.

It is a cyclic number.

It is not a de Polignac number, because 20344702577677 - 2³⁵ = 20310342839309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20344702577627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275386498 + ... + 275460364.

It is an arithmetic number, because the mean of its divisors is an integer number (1300850936640).

Almost surely, 2^{20344702577677} is an apocalyptic number.

It is an amenable number.

20344702577677 is a deficient number, since it is larger than the sum of its proper divisors (468912408563).

20344702577677 is an equidigital number, since it uses as much as digits as its factorization.

20344702577677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84000.

The product of its (nonzero) digits is 96808320, while the sum is 61.

The spelling of 20344702577677 in words is "twenty trillion, three hundred forty-four billion, seven hundred two million, five hundred seventy-seven thousand, six hundred seventy-seven".