421616273064 has 48 divisors (see below), whose sum is σ = 1226128960800. Its totient is φ = 120461791968.

The previous prime is 421616273033. The next prime is 421616273119. The reversal of 421616273064 is 460372616124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179257444 + ... + 179259795.

It is an arithmetic number, because the mean of its divisors is an integer number (25544353350).

Almost surely, 2^421616273064 is an apocalyptic number.

It is an amenable number.

421616273064 is an abundant number, since it is smaller than the sum of its proper divisors (804512687736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421616273064 is a wasteful number, since it uses less digits than its factorization.

421616273064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358517262 (or 358517251 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

Adding to 421616273064 its reverse (460372616124), we get a palindrome (881988889188).

The spelling of 421616273064 in words is "four hundred twenty-one billion, six hundred sixteen million, two hundred seventy-three thousand, sixty-four".