16640362460 has 24 divisors (see below), whose sum is σ = 36464099616. Its totient is φ = 6366747200.

The previous prime is 16640362457. The next prime is 16640362471. The reversal of 16640362460 is 6426304661.

It is a happy number.

It is a congruent number.

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, 18086891 + ... + 18087810.

It is an arithmetic number, because the mean of its divisors is an integer number (1519337484).

Almost surely, 2^16640362460 is an apocalyptic number.

16640362460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16640362460 is an abundant number, since it is smaller than the sum of its proper divisors (19823737156).

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

16640362460 is a wasteful number, since it uses less digits than its factorization.

16640362460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36174733 (or 36174731 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 16640362460 in words is "sixteen billion, six hundred forty million, three hundred sixty-two thousand, four hundred sixty".