21730541174797 has 16 divisors (see below), whose sum is σ = 27608032463872. Its totient is φ = 16638769560960.

The previous prime is 21730541174789. The next prime is 21730541174819. The reversal of 21730541174797 is 79747114503712.

It is a cyclic number.

It is not a de Polignac number, because 21730541174797 - 2³ = 21730541174789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21730541174777) 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, 3851564208 + ... + 3851569849.

It is an arithmetic number, because the mean of its divisors is an integer number (1725502028992).

Almost surely, 2^{21730541174797} is an apocalyptic number.

It is an amenable number.

21730541174797 is a deficient number, since it is larger than the sum of its proper divisors (5877491289075).

21730541174797 is a wasteful number, since it uses less digits than its factorization.

21730541174797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7703134108.

The product of its (nonzero) digits is 10372320, while the sum is 58.

The spelling of 21730541174797 in words is "twenty-one trillion, seven hundred thirty billion, five hundred forty-one million, one hundred seventy-four thousand, seven hundred ninety-seven".