16720615775343 has 16 divisors (see below), whose sum is σ = 22317862456800. Its totient is φ = 11135225681280.

The previous prime is 16720615775327. The next prime is 16720615775387. The reversal of 16720615775343 is 34357751602761.

It is not a de Polignac number, because 16720615775343 - 2⁴ = 16720615775327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16720615075343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26389093 + ... + 27015281.

It is an arithmetic number, because the mean of its divisors is an integer number (1394866403550).

Almost surely, 2^{16720615775343} is an apocalyptic number.

16720615775343 is a deficient number, since it is larger than the sum of its proper divisors (5597246681457).

16720615775343 is a wasteful number, since it uses less digits than its factorization.

16720615775343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635642.

The product of its (nonzero) digits is 22226400, while the sum is 57.

The spelling of 16720615775343 in words is "sixteen trillion, seven hundred twenty billion, six hundred fifteen million, seven hundred seventy-five thousand, three hundred forty-three".