417645021023 has 4 divisors (see below), whose sum is σ = 431117441088. Its totient is φ = 404172600960.

The previous prime is 417645020999. The next prime is 417645021037. The reversal of 417645021023 is 320120546714.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 417645021023 - 2¹⁰ = 417645019999 is a prime.

It is a super-2 number, since 2×417645021023² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (417645021923) 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, 6736209986 + ... + 6736210047.

It is an arithmetic number, because the mean of its divisors is an integer number (107779360272).

Almost surely, 2^417645021023 is an apocalyptic number.

417645021023 is a deficient number, since it is larger than the sum of its proper divisors (13472420065).

417645021023 is a wasteful number, since it uses less digits than its factorization.

417645021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13472420064.

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 417645021023 its reverse (320120546714), we get a palindrome (737765567737).

The spelling of 417645021023 in words is "four hundred seventeen billion, six hundred forty-five million, twenty-one thousand, twenty-three".