16331451620 has 48 divisors (see below), whose sum is σ = 38620786176. Its totient is φ = 5747136000.

The previous prime is 16331451613. The next prime is 16331451629. The reversal of 16331451620 is 2615413361.

It is not an unprimeable number, because it can be changed into a prime (16331451629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190501 + ... + 1204140.

It is an arithmetic number, because the mean of its divisors is an integer number (804599712).

Almost surely, 2^16331451620 is an apocalyptic number.

16331451620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16331451620 is an abundant number, since it is smaller than the sum of its proper divisors (22289334556).

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

16331451620 is a wasteful number, since it uses less digits than its factorization.

16331451620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394692 (or 2394690 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 16331451620 its reverse (2615413361), we get a palindrome (18946864981).

The spelling of 16331451620 in words is "sixteen billion, three hundred thirty-one million, four hundred fifty-one thousand, six hundred twenty".