16570606631401 has 81 divisors (see below), whose sum is σ = 19110936589381. Its totient is φ = 14363256802048.

The previous prime is 16570606631389. The next prime is 16570606631437. The reversal of 16570606631401 is 10413660607561.

The square root of 16570606631401 is 4070701.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1637977627225 + 14932629004176 = 1279835^2 + 3864276^2 .

It is not a de Polignac number, because 16570606631401 - 2²¹ = 16570604534249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16570606631701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 46157678460 + ... + 46157678818.

Almost surely, 2^{16570606631401} is an apocalyptic number.

16570606631401 is the 4070701-st square number.

16570606631401 is the 2035351-st centered octagonal number.

It is an amenable number.

16570606631401 is a deficient number, since it is larger than the sum of its proper divisors (2540329957980).

16570606631401 is an frugal number, since it uses more digits than its factorization.

16570606631401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 16570606631401 in words is "sixteen trillion, five hundred seventy billion, six hundred six million, six hundred thirty-one thousand, four hundred one".