16555606101 has 24 divisors (see below), whose sum is σ = 24841004760. Its totient is φ = 10612224000.

The previous prime is 16555606061. The next prime is 16555606127. The reversal of 16555606101 is 10160655561.

It can be written as a sum of positive squares in 4 ways, for example, as 1062825201 + 15492780900 = 32601^2 + 124470^2 .

It is not a de Polignac number, because 16555606101 - 2⁹ = 16555605589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16555606181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68700 + ... + 194501.

It is an arithmetic number, because the mean of its divisors is an integer number (1035041865).

Almost surely, 2^16555606101 is an apocalyptic number.

It is an amenable number.

16555606101 is a deficient number, since it is larger than the sum of its proper divisors (8285398659).

16555606101 is a wasteful number, since it uses less digits than its factorization.

16555606101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263477 (or 263474 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

It can be divided in two parts, 1655560 and 6101, that added together give a palindrome (1661661).

The spelling of 16555606101 in words is "sixteen billion, five hundred fifty-five million, six hundred six thousand, one hundred one".