16720615775434 has 8 divisors (see below), whose sum is σ = 25398403709760. Its totient is φ = 8254481205516.

The previous prime is 16720615775431. The next prime is 16720615775449. The reversal of 16720615775434 is 43457751602761.

16720615775434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (16720615775431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52913340904 + ... + 52913341219.

It is an arithmetic number, because the mean of its divisors is an integer number (3174800463720).

Almost surely, 2^{16720615775434} is an apocalyptic number.

16720615775434 is a deficient number, since it is larger than the sum of its proper divisors (8677787934326).

16720615775434 is a wasteful number, since it uses less digits than its factorization.

16720615775434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105826682204.

The product of its (nonzero) digits is 29635200, while the sum is 58.

The spelling of 16720615775434 in words is "sixteen trillion, seven hundred twenty billion, six hundred fifteen million, seven hundred seventy-five thousand, four hundred thirty-four".