421145013054523 has 12 divisors (see below), whose sum is σ = 443465297859528. Its totient is φ = 399893963453600.

The previous prime is 421145013054449. The next prime is 421145013054559. The reversal of 421145013054523 is 325450310541124.

It is not a de Polignac number, because 421145013054523 - 2⁹ = 421145013054011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421145013054593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2905457953 + ... + 2905602898.

It is an arithmetic number, because the mean of its divisors is an integer number (36955441488294).

Almost surely, 2^{421145013054523} is an apocalyptic number.

421145013054523 is a deficient number, since it is larger than the sum of its proper divisors (22320284805005).

421145013054523 is a wasteful number, since it uses less digits than its factorization.

421145013054523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5811061034 (or 5811061011 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 421145013054523 its reverse (325450310541124), we get a palindrome (746595323595647).

The spelling of 421145013054523 in words is "four hundred twenty-one trillion, one hundred forty-five billion, thirteen million, fifty-four thousand, five hundred twenty-three".