16277798880 has 240 divisors, whose sum is σ = 65654154720. Its totient is φ = 3720619008.

The previous prime is 16277798857. The next prime is 16277798903. The reversal of 16277798880 is 8889777261.

It is an interprime number because it is at equal distance from previous prime (16277798857) and next prime (16277798903).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1006 + ... + 180434.

It is an arithmetic number, because the mean of its divisors is an integer number (273558978).

Almost surely, 2^16277798880 is an apocalyptic number.

16277798880 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 16277798880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32827077360).

16277798880 is an abundant number, since it is smaller than the sum of its proper divisors (49376355840).

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

16277798880 is a wasteful number, since it uses less digits than its factorization.

16277798880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179463 (or 179446 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 63.

The spelling of 16277798880 in words is "sixteen billion, two hundred seventy-seven million, seven hundred ninety-eight thousand, eight hundred eighty".