16006001640 has 32 divisors (see below), whose sum is σ = 48018005280. Its totient is φ = 4268267072.

The previous prime is 16006001621. The next prime is 16006001677. The reversal of 16006001640 is 4610060061.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 16006001640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66691554 + ... + 66691793.

It is an arithmetic number, because the mean of its divisors is an integer number (1500562665).

Almost surely, 2^16006001640 is an apocalyptic number.

16006001640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16006001640 is an abundant number, since it is smaller than the sum of its proper divisors (32012003640).

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

16006001640 is a wasteful number, since it uses less digits than its factorization.

16006001640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133383361 (or 133383357 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 16006001640 in words is "sixteen billion, six million, one thousand, six hundred forty".