16840215040 has 160 divisors (see below), whose sum is σ = 44167083840. Its totient is φ = 6107136000.

The previous prime is 16840214987. The next prime is 16840215061. The reversal of 16840215040 is 4051204861.

It is a tau number, because it is divible by the number of its divisors (160).

It is a junction number, because it is equal to n+sod(n) for n = 16840214993 and 16840215011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16022515 + ... + 16023565.

It is an arithmetic number, because the mean of its divisors is an integer number (276044274).

Almost surely, 2^16840215040 is an apocalyptic number.

16840215040 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 16840215040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22083541920).

16840215040 is an abundant number, since it is smaller than the sum of its proper divisors (27326868800).

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

16840215040 is a wasteful number, since it uses less digits than its factorization.

16840215040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654 (or 1638 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The spelling of 16840215040 in words is "sixteen billion, eight hundred forty million, two hundred fifteen thousand, forty".