16938554709247 has 8 divisors (see below), whose sum is σ = 16987888309392. Its totient is φ = 16889224094400.

The previous prime is 16938554709203. The next prime is 16938554709257. The reversal of 16938554709247 is 74290745583961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16938554709247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16938554709257) 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, 10881547 + ... + 12340387.

It is an arithmetic number, because the mean of its divisors is an integer number (2123486038674).

It is a 1-persistent number, because it is pandigital, but 2⋅16938554709247 = 33877109418494 is not.

Almost surely, 2^{16938554709247} is an apocalyptic number.

16938554709247 is a deficient number, since it is larger than the sum of its proper divisors (49333600145).

16938554709247 is a wasteful number, since it uses less digits than its factorization.

16938554709247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492649.

The product of its (nonzero) digits is 457228800, while the sum is 70.

The spelling of 16938554709247 in words is "sixteen trillion, nine hundred thirty-eight billion, five hundred fifty-four million, seven hundred nine thousand, two hundred forty-seven".