16598768640 has 88 divisors (see below), whose sum is σ = 53090173200. Its totient is φ = 4426334208.

The previous prime is 16598768611. The next prime is 16598768647. The reversal of 16598768640 is 4686789561.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16598768647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 524965 + ... + 555684.

Almost surely, 2^16598768640 is an apocalyptic number.

16598768640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16598768640 is an abundant number, since it is smaller than the sum of its proper divisors (36491404560).

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

16598768640 is a wasteful number, since it uses less digits than its factorization.

16598768640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080677 (or 1080659 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 60.

The spelling of 16598768640 in words is "sixteen billion, five hundred ninety-eight million, seven hundred sixty-eight thousand, six hundred forty".