16267780380 has 96 divisors (see below), whose sum is σ = 46956490560. Its totient is φ = 4204984320.

The previous prime is 16267780367. The next prime is 16267780381. The reversal of 16267780380 is 8308776261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16267780381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 583560 + ... + 610800.

It is an arithmetic number, because the mean of its divisors is an integer number (489130110).

Almost surely, 2^16267780380 is an apocalyptic number.

16267780380 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 16267780380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23478245280).

16267780380 is an abundant number, since it is smaller than the sum of its proper divisors (30688710180).

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

16267780380 is a wasteful number, since it uses less digits than its factorization.

16267780380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27559 (or 27557 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 16267780380 in words is "sixteen billion, two hundred sixty-seven million, seven hundred eighty thousand, three hundred eighty".