16497655917600 has 576 divisors, whose sum is σ = 63158707584000. Its totient is φ = 3687643238400.

The previous prime is 16497655917563. The next prime is 16497655917619. The reversal of 16497655917600 is 671955679461.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 311255901 + ... + 311308899.

It is an arithmetic number, because the mean of its divisors is an integer number (109650534000).

Almost surely, 2^{16497655917600} is an apocalyptic number.

16497655917600 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 16497655917600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31579353792000).

16497655917600 is an abundant number, since it is smaller than the sum of its proper divisors (46661051666400).

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

16497655917600 is a wasteful number, since it uses less digits than its factorization.

16497655917600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53953 (or 53940 counting only the distinct ones).

The product of its (nonzero) digits is 85730400, while the sum is 66.

The spelling of 16497655917600 in words is "sixteen trillion, four hundred ninety-seven billion, six hundred fifty-five million, nine hundred seventeen thousand, six hundred".