421363605664555 has 16 divisors (see below), whose sum is σ = 506414379144960. Its totient is φ = 336572204737888.

The previous prime is 421363605664553. The next prime is 421363605664571. The reversal of 421363605664555 is 555466506363124.

It is a cyclic number.

It is not a de Polignac number, because 421363605664555 - 2¹ = 421363605664553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421363605664493 and 421363605664502.

It is not an unprimeable number, because it can be changed into a prime (421363605664553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156306234 + ... + 158979136.

It is an arithmetic number, because the mean of its divisors is an integer number (31650898696560).

Almost surely, 2^{421363605664555} is an apocalyptic number.

421363605664555 is a deficient number, since it is larger than the sum of its proper divisors (85050773480405).

421363605664555 is a wasteful number, since it uses less digits than its factorization.

421363605664555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721410.

The product of its (nonzero) digits is 233280000, while the sum is 61.

The spelling of 421363605664555 in words is "four hundred twenty-one trillion, three hundred sixty-three billion, six hundred five million, six hundred sixty-four thousand, five hundred fifty-five".