420488136372863 has 4 divisors (see below), whose sum is σ = 452833377632328. Its totient is φ = 388142895113400.

The previous prime is 420488136372797. The next prime is 420488136372907. The reversal of 420488136372863 is 368273631884024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420488136372863 - 2¹² = 420488136368767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420488136372863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420488135372863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16172620629713 + ... + 16172620629738.

It is an arithmetic number, because the mean of its divisors is an integer number (113208344408082).

Almost surely, 2^{420488136372863} is an apocalyptic number.

420488136372863 is a deficient number, since it is larger than the sum of its proper divisors (32345241259465).

420488136372863 is a wasteful number, since it uses less digits than its factorization.

420488136372863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32345241259464.

The product of its (nonzero) digits is 222953472, while the sum is 65.

The spelling of 420488136372863 in words is "four hundred twenty trillion, four hundred eighty-eight billion, one hundred thirty-six million, three hundred seventy-two thousand, eight hundred sixty-three".