16556051016061 has 4 divisors (see below), whose sum is σ = 16628348182300. Its totient is φ = 16483753849824.

The previous prime is 16556051016047. The next prime is 16556051016073. The reversal of 16556051016061 is 16061015065561.

16556051016061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15380366211961 + 1175684804100 = 3921781^2 + 1084290^2 .

It is a cyclic number.

It is not a de Polignac number, because 16556051016061 - 2¹³ = 16556051007869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16556051015999 and 16556051016017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16556051016091) 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, 36148582776 + ... + 36148583233.

It is an arithmetic number, because the mean of its divisors is an integer number (4157087045575).

Almost surely, 2^{16556051016061} is an apocalyptic number.

It is an amenable number.

16556051016061 is a deficient number, since it is larger than the sum of its proper divisors (72297166239).

16556051016061 is an equidigital number, since it uses as much as digits as its factorization.

16556051016061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72297166238.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 16556051016061 in words is "sixteen trillion, five hundred fifty-six billion, fifty-one million, sixteen thousand, sixty-one".