420005173856 has 12 divisors (see below), whose sum is σ = 826885186092. Its totient is φ = 210002586912.

The previous prime is 420005173843. The next prime is 420005173867. The reversal of 420005173856 is 658371500024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562580810 + ... + 6562580873.

It is an arithmetic number, because the mean of its divisors is an integer number (68907098841).

Almost surely, 2^420005173856 is an apocalyptic number.

It is an amenable number.

420005173856 is a deficient number, since it is larger than the sum of its proper divisors (406880012236).

420005173856 is a wasteful number, since it uses less digits than its factorization.

420005173856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13125161693 (or 13125161685 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 420005173856 in words is "four hundred twenty billion, five million, one hundred seventy-three thousand, eight hundred fifty-six".