16351666240 has 672 divisors, whose sum is σ = 53449240320. Its totient is φ = 4632477696.

The previous prime is 16351666231. The next prime is 16351666267. The reversal of 16351666240 is 4266615361.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 16351666193 and 16351666202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 244054687 + ... + 244054753.

It is an arithmetic number, because the mean of its divisors is an integer number (79537560).

Almost surely, 2^16351666240 is an apocalyptic number.

16351666240 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 16351666240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26724620160).

16351666240 is an abundant number, since it is smaller than the sum of its proper divisors (37097574080).

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

16351666240 is a wasteful number, since it uses less digits than its factorization.

16351666240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 16351666240 in words is "sixteen billion, three hundred fifty-one million, six hundred sixty-six thousand, two hundred forty".