421356065644432 has 20 divisors (see below), whose sum is σ = 819942343905820. Its totient is φ = 209758041410688.

The previous prime is 421356065644427. The next prime is 421356065644441. The reversal of 421356065644432 is 234446560653124.

It can be written as a sum of positive squares in 2 ways, for example, as 229744470840976 + 191611594803456 = 15157324^2 + 13842384^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57499459443 + ... + 57499466770.

It is an arithmetic number, because the mean of its divisors is an integer number (40997117195291).

Almost surely, 2^{421356065644432} is an apocalyptic number.

It is an amenable number.

421356065644432 is a deficient number, since it is larger than the sum of its proper divisors (398586278261388).

421356065644432 is a wasteful number, since it uses less digits than its factorization.

421356065644432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114998926450 (or 114998926444 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 55.

The spelling of 421356065644432 in words is "four hundred twenty-one trillion, three hundred fifty-six billion, sixty-five million, six hundred forty-four thousand, four hundred thirty-two".