17713429555421 has 2 divisors, whose sum is σ = 17713429555422. Its totient is φ = 17713429555420.

The previous prime is 17713429555411. The next prime is 17713429555477. The reversal of 17713429555421 is 12455592431771.

It is an a-pointer prime, because the next prime (17713429555477) can be obtained adding 17713429555421 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11429734262521 + 6283695292900 = 3380789^2 + 2506730^2 .

It is a cyclic number.

It is not a de Polignac number, because 17713429555421 - 2¹⁰ = 17713429554397 is a prime.

It is a super-2 number, since 2×17713429555421² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17713429555411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8856714777710 + 8856714777711.

It is an arithmetic number, because the mean of its divisors is an integer number (8856714777711).

Almost surely, 2^{17713429555421} is an apocalyptic number.

It is an amenable number.

17713429555421 is a deficient number, since it is larger than the sum of its proper divisors (1).

17713429555421 is an equidigital number, since it uses as much as digits as its factorization.

17713429555421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584000, while the sum is 56.

The spelling of 17713429555421 in words is "seventeen trillion, seven hundred thirteen billion, four hundred twenty-nine million, five hundred fifty-five thousand, four hundred twenty-one".