3552776384161 has 3 divisors (see below), whose sum is σ = 3552778269043. Its totient is φ = 3552774499280.

The previous prime is 3552776384119. The next prime is 3552776384173. The reversal of 3552776384161 is 1614836772553.

The square root of 3552776384161 is 1884881.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 844250406561 + 2708525977600 = 918831^2 + 1645760^2 .

It is not a de Polignac number, because 3552776384161 - 2⁷ = 3552776384033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3552776384096 and 3552776384105.

It is not an unprimeable number, because it can be changed into a prime (3552776384461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 942441 + ... + 2827321.

Almost surely, 2^{3552776384161} is an apocalyptic number.

3552776384161 is the 1884881-st square number.

3552776384161 is the 942441-st centered octagonal number.

It is an amenable number.

3552776384161 is a deficient number, since it is larger than the sum of its proper divisors (1884882).

3552776384161 is an frugal number, since it uses more digits than its factorization.

3552776384161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3769762 (or 1884881 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 58.

The spelling of 3552776384161 in words is "three trillion, five hundred fifty-two billion, seven hundred seventy-six million, three hundred eighty-four thousand, one hundred sixty-one".