16298507640 has 32 divisors (see below), whose sum is σ = 48895523280. Its totient is φ = 4346268672.

The previous prime is 16298507627. The next prime is 16298507669. The reversal of 16298507640 is 4670589261.

It is a super-2 number, since 2×16298507640² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16298507640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67910329 + ... + 67910568.

Almost surely, 2^16298507640 is an apocalyptic number.

16298507640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16298507640 is an abundant number, since it is smaller than the sum of its proper divisors (32597015640).

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

16298507640 is a wasteful number, since it uses less digits than its factorization.

16298507640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135820911 (or 135820907 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 16298507640 in words is "sixteen billion, two hundred ninety-eight million, five hundred seven thousand, six hundred forty".