16491918541248 has 672 divisors, whose sum is σ = 52302729024000. Its totient is φ = 5141115961344.

The previous prime is 16491918541223. The next prime is 16491918541277. The reversal of 16491918541248 is 84214581919461.

16491918541248 is a `hidden beast` number, since 1 + 6 + 4 + 91 + 91 + 8 + 5 + 412 + 48 = 666.

It is a congruent number.

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, 4073082328 + ... + 4073086376.

It is an arithmetic number, because the mean of its divisors is an integer number (77831442000).

Almost surely, 2^{16491918541248} is an apocalyptic number.

16491918541248 is a gapful number since it is divisible by the number (18) 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 16491918541248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26151364512000).

16491918541248 is an abundant number, since it is smaller than the sum of its proper divisors (35810810482752).

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

16491918541248 is a wasteful number, since it uses less digits than its factorization.

16491918541248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351 (or 4329 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 63.

The spelling of 16491918541248 in words is "sixteen trillion, four hundred ninety-one billion, nine hundred eighteen million, five hundred forty-one thousand, two hundred forty-eight".