421016876481 has 4 divisors (see below), whose sum is σ = 561355835312. Its totient is φ = 280677917652.

The previous prime is 421016876479. The next prime is 421016876513. The reversal of 421016876481 is 184678610124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 421016876481 - 2¹ = 421016876479 is a prime.

It is a super-2 number, since 2×421016876481² (a number of 24 digits) contains 22 as substring.

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 421016876481.

It is not an unprimeable number, because it can be changed into a prime (421016876381) 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, 70169479411 + ... + 70169479416.

It is an arithmetic number, because the mean of its divisors is an integer number (140338958828).

Almost surely, 2^421016876481 is an apocalyptic number.

It is an amenable number.

421016876481 is a deficient number, since it is larger than the sum of its proper divisors (140338958831).

421016876481 is a wasteful number, since it uses less digits than its factorization.

421016876481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140338958830.

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 421016876481 in words is "four hundred twenty-one billion, sixteen million, eight hundred seventy-six thousand, four hundred eighty-one".