421466155645 has 16 divisors (see below), whose sum is σ = 509046975360. Its totient is φ = 334983256384.

The previous prime is 421466155639. The next prime is 421466155681. The reversal of 421466155645 is 546551664124.

It is a cyclic number.

It is not a de Polignac number, because 421466155645 - 2³ = 421466155637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1524939 + ... + 1779991.

It is an arithmetic number, because the mean of its divisors is an integer number (31815435960).

Almost surely, 2^421466155645 is an apocalyptic number.

It is an amenable number.

421466155645 is a deficient number, since it is larger than the sum of its proper divisors (87580819715).

421466155645 is a wasteful number, since it uses less digits than its factorization.

421466155645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257204.

The product of its digits is 3456000, while the sum is 49.

The spelling of 421466155645 in words is "four hundred twenty-one billion, four hundred sixty-six million, one hundred fifty-five thousand, six hundred forty-five".