417712028621 has 2 divisors, whose sum is σ = 417712028622. Its totient is φ = 417712028620.

The previous prime is 417712028611. The next prime is 417712028623. The reversal of 417712028621 is 126820217714.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 375261607396 + 42450421225 = 612586^2 + 206035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-417712028621 is a prime.

It is a super-2 number, since 2×417712028621² (a number of 24 digits) contains 22 as substring.

Together with 417712028623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (417712028623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208856014310 + 208856014311.

It is an arithmetic number, because the mean of its divisors is an integer number (208856014311).

Almost surely, 2^417712028621 is an apocalyptic number.

It is an amenable number.

417712028621 is a deficient number, since it is larger than the sum of its proper divisors (1).

417712028621 is an equidigital number, since it uses as much as digits as its factorization.

417712028621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 41.

The spelling of 417712028621 in words is "four hundred seventeen billion, seven hundred twelve million, twenty-eight thousand, six hundred twenty-one".