16407868620 has 432 divisors, whose sum is σ = 56133133056. Its totient is φ = 3574771200.

The previous prime is 16407868571. The next prime is 16407868643. The reversal of 16407868620 is 2686870461.

It is a self number, because there is not a number n which added to its sum of digits gives 16407868620.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 52758265 + ... + 52758575.

It is an arithmetic number, because the mean of its divisors is an integer number (129937808).

Almost surely, 2^16407868620 is an apocalyptic number.

16407868620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16407868620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28066566528).

16407868620 is an abundant number, since it is smaller than the sum of its proper divisors (39725264436).

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

16407868620 is a wasteful number, since it uses less digits than its factorization.

16407868620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 16407868620 in words is "sixteen billion, four hundred seven million, eight hundred sixty-eight thousand, six hundred twenty".