16729406280 has 160 divisors (see below), whose sum is σ = 57537532800. Its totient is φ = 4357390464.

The previous prime is 16729406263. The next prime is 16729406347. The reversal of 16729406280 is 8260492761.

It is a happy number.

16729406280 is a `hidden beast` number, since 16 + 7 + 2 + 9 + 4 + 0 + 628 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 79281 + ... + 199359.

It is an arithmetic number, because the mean of its divisors is an integer number (359609580).

Almost surely, 2^16729406280 is an apocalyptic number.

16729406280 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 16729406280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28768766400).

16729406280 is an abundant number, since it is smaller than the sum of its proper divisors (40808126520).

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

16729406280 is a wasteful number, since it uses less digits than its factorization.

16729406280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120145 (or 120132 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 16729406280 in words is "sixteen billion, seven hundred twenty-nine million, four hundred six thousand, two hundred eighty".