421511322455 has 16 divisors (see below), whose sum is σ = 533214990720. Its totient is φ = 318993431328.

The previous prime is 421511322437. The next prime is 421511322467. The reversal of 421511322455 is 554223115124.

It is a cyclic number.

It is not a de Polignac number, because 421511322455 - 2¹⁶ = 421511256919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3183257 + ... + 3313026.

It is an arithmetic number, because the mean of its divisors is an integer number (33325936920).

Almost surely, 2^421511322455 is an apocalyptic number.

421511322455 is a deficient number, since it is larger than the sum of its proper divisors (111703668265).

421511322455 is a wasteful number, since it uses less digits than its factorization.

421511322455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6496990.

The product of its digits is 48000, while the sum is 35.

Adding to 421511322455 its reverse (554223115124), we get a palindrome (975734437579).

The spelling of 421511322455 in words is "four hundred twenty-one billion, five hundred eleven million, three hundred twenty-two thousand, four hundred fifty-five".