421321342523511 has 8 divisors (see below), whose sum is σ = 564214898285680. Its totient is φ = 279654340888512.

The previous prime is 421321342523509. The next prime is 421321342523561. The reversal of 421321342523511 is 115325243123124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 421321342523511 - 2¹ = 421321342523509 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421321342523511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421321342523561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306638530990 + ... + 306638532363.

It is an arithmetic number, because the mean of its divisors is an integer number (70526862285710).

Almost surely, 2^{421321342523511} is an apocalyptic number.

421321342523511 is a deficient number, since it is larger than the sum of its proper divisors (142893555762169).

421321342523511 is a wasteful number, since it uses less digits than its factorization.

421321342523511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613277063585.

The product of its digits is 172800, while the sum is 39.

Adding to 421321342523511 its reverse (115325243123124), we get a palindrome (536646585646635).

The spelling of 421321342523511 in words is "four hundred twenty-one trillion, three hundred twenty-one billion, three hundred forty-two million, five hundred twenty-three thousand, five hundred eleven".