16990261388496 has 720 divisors, whose sum is σ = 55988352516096. Its totient is φ = 4797600192000.

The previous prime is 16990261388467. The next prime is 16990261388543. The reversal of 16990261388496 is 69488316209961.

16990261388496 is a `hidden beast` number, since 1 + 69 + 90 + 2 + 61 + 388 + 49 + 6 = 666.

It is a super-2 number, since 2×16990261388496² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1649054481 + ... + 1649064783.

Almost surely, 2^{16990261388496} is an apocalyptic number.

16990261388496 is a gapful number since it is divisible by the number (16) 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 16990261388496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27994176258048).

16990261388496 is an abundant number, since it is smaller than the sum of its proper divisors (38998091127600).

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

16990261388496 is a wasteful number, since it uses less digits than its factorization.

16990261388496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10484 (or 10464 counting only the distinct ones).

The product of its (nonzero) digits is 241864704, while the sum is 72.

The spelling of 16990261388496 in words is "sixteen trillion, nine hundred ninety billion, two hundred sixty-one million, three hundred eighty-eight thousand, four hundred ninety-six".