420135666684 has 24 divisors (see below), whose sum is σ = 992725628160. Its totient is φ = 138272497584.

The previous prime is 420135666683. The next prime is 420135666719. The reversal of 420135666684 is 486666531024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420135666683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221589594 + ... + 221591489.

It is an arithmetic number, because the mean of its divisors is an integer number (41363567840).

Almost surely, 2^420135666684 is an apocalyptic number.

It is an amenable number.

420135666684 is an abundant number, since it is smaller than the sum of its proper divisors (572589961476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420135666684 is a wasteful number, since it uses less digits than its factorization.

420135666684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443181169 (or 443181167 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 51.

The spelling of 420135666684 in words is "four hundred twenty billion, one hundred thirty-five million, six hundred sixty-six thousand, six hundred eighty-four".