420544233516 has 48 divisors (see below), whose sum is σ = 1117018683648. Its totient is φ = 121896878400.

The previous prime is 420544233491. The next prime is 420544233517. The reversal of 420544233516 is 615332445024.

It is not an unprimeable number, because it can be changed into a prime (420544233517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69256555 + ... + 69262626.

It is an arithmetic number, because the mean of its divisors is an integer number (23271222576).

Almost surely, 2^420544233516 is an apocalyptic number.

420544233516 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

420544233516 is an abundant number, since it is smaller than the sum of its proper divisors (696474450132).

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

420544233516 is a wasteful number, since it uses less digits than its factorization.

420544233516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138519222 (or 138519220 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 420544233516 in words is "four hundred twenty billion, five hundred forty-four million, two hundred thirty-three thousand, five hundred sixteen".