2016431680 has 56 divisors (see below), whose sum is σ = 4913327232. Its totient is φ = 787809792.

The previous prime is 2016431671. The next prime is 2016431687. The reversal of 2016431680 is 861346102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2016431687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59512 + ... + 87031.

Almost surely, 2^2016431680 is an apocalyptic number.

2016431680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2016431680 is an abundant number, since it is smaller than the sum of its proper divisors (2896895552).

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

2016431680 is a wasteful number, since it uses less digits than its factorization.

2016431680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146603 (or 146593 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2016431680 is about 44904.6955228515. The cubic root of 2016431680 is about 1263.3620799651.

Adding to 2016431680 its reverse (861346102), we get a palindrome (2877777782).

The spelling of 2016431680 in words is "two billion, sixteen million, four hundred thirty-one thousand, six hundred eighty".