21734063651177 has 4 divisors (see below), whose sum is σ = 21763959200256. Its totient is φ = 21704168102100.

The previous prime is 21734063651093. The next prime is 21734063651189. The reversal of 21734063651177 is 77115636043712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21734063651177 - 2¹⁰ = 21734063650153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21734063621177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14947773449 + ... + 14947774902.

It is an arithmetic number, because the mean of its divisors is an integer number (5440989800064).

Almost surely, 2^{21734063651177} is an apocalyptic number.

It is an amenable number.

21734063651177 is a deficient number, since it is larger than the sum of its proper divisors (29895549079).

21734063651177 is an equidigital number, since it uses as much as digits as its factorization.

21734063651177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29895549078.

The product of its (nonzero) digits is 4445280, while the sum is 53.

Adding to 21734063651177 its reverse (77115636043712), we get a palindrome (98849699694889).

The spelling of 21734063651177 in words is "twenty-one trillion, seven hundred thirty-four billion, sixty-three million, six hundred fifty-one thousand, one hundred seventy-seven".