421216626324420 has 72 divisors (see below), whose sum is σ = 1278822134804760. Its totient is φ = 112224943434240.

The previous prime is 421216626324379. The next prime is 421216626324493. The reversal of 421216626324420 is 24423626612124.

421216626324420 is a `hidden beast` number, since 4 + 2 + 1 + 2 + 1 + 6 + 6 + 2 + 632 + 4 + 4 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1426438480896 + 419790187843524 = 1194336^2 + 20488782^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1036153011 + ... + 1036559450.

It is an arithmetic number, because the mean of its divisors is an integer number (17761418538955).

Almost surely, 2^{421216626324420} is an apocalyptic number.

It is an amenable number.

421216626324420 is an abundant number, since it is smaller than the sum of its proper divisors (857605508480340).

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

421216626324420 is a wasteful number, since it uses less digits than its factorization.

421216626324420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072713605 (or 2072713600 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 45.

The spelling of 421216626324420 in words is "four hundred twenty-one trillion, two hundred sixteen billion, six hundred twenty-six million, three hundred twenty-four thousand, four hundred twenty".