420974217613 has 4 divisors (see below), whose sum is σ = 424288975360. Its totient is φ = 417659459868.

The previous prime is 420974217581. The next prime is 420974217623. The reversal of 420974217613 is 316712479024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420974217613 - 2⁵ = 420974217581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420974217623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1657378683 + ... + 1657378936.

It is an arithmetic number, because the mean of its divisors is an integer number (106072243840).

Almost surely, 2^420974217613 is an apocalyptic number.

It is an amenable number.

420974217613 is a deficient number, since it is larger than the sum of its proper divisors (3314757747).

420974217613 is a wasteful number, since it uses less digits than its factorization.

420974217613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3314757746.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 420974217613 in words is "four hundred twenty billion, nine hundred seventy-four million, two hundred seventeen thousand, six hundred thirteen".