421776234720576 has 168 divisors, whose sum is σ = 1274273988265824. Its totient is φ = 138287289761280.

The previous prime is 421776234720559. The next prime is 421776234720613. The reversal of 421776234720576 is 675027432677124.

421776234720576 is a `hidden beast` number, since 4 + 2 + 1 + 7 + 7 + 6 + 2 + 34 + 7 + 20 + 576 = 666.

It is a congruent number.

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, 221349570 + ... + 223246913.

It is an arithmetic number, because the mean of its divisors is an integer number (7584964215868).

Almost surely, 2^{421776234720576} is an apocalyptic number.

It is an amenable number.

421776234720576 is an abundant number, since it is smaller than the sum of its proper divisors (852497753545248).

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

421776234720576 is an equidigital number, since it uses as much as digits as its factorization.

421776234720576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444596571 (or 444596549 counting only the distinct ones).

The product of its (nonzero) digits is 165957120, while the sum is 63.

The spelling of 421776234720576 in words is "four hundred twenty-one trillion, seven hundred seventy-six billion, two hundred thirty-four million, seven hundred twenty thousand, five hundred seventy-six".