20004352517177 has 32 divisors (see below), whose sum is σ = 23718104198400. Its totient is φ = 16507998920448.

The previous prime is 20004352517153. The next prime is 20004352517207. The reversal of 20004352517177 is 77171525340002.

It is not a de Polignac number, because 20004352517177 - 2¹⁴ = 20004352500793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20004352517777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381350483 + ... + 381402935.

It is an arithmetic number, because the mean of its divisors is an integer number (741190756200).

Almost surely, 2^{20004352517177} is an apocalyptic number.

It is an amenable number.

20004352517177 is a deficient number, since it is larger than the sum of its proper divisors (3713751681223).

20004352517177 is a wasteful number, since it uses less digits than its factorization.

20004352517177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57825.

The product of its (nonzero) digits is 411600, while the sum is 44.

Adding to 20004352517177 its reverse (77171525340002), we get a palindrome (97175877857179).

The spelling of 20004352517177 in words is "twenty trillion, four billion, three hundred fifty-two million, five hundred seventeen thousand, one hundred seventy-seven".