5355378160561 has 27 divisors (see below), whose sum is σ = 6374522175147. Its totient is φ = 4493745930960.

The previous prime is 5355378160487. The next prime is 5355378160621. The reversal of 5355378160561 is 1650618735535.

The square root of 5355378160561 is 2314169.

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

It can be written as a sum of positive squares in only one way, i.e., 792215704225 + 4563162456336 = 890065^2 + 2136156^2 .

It is not a de Polignac number, because 5355378160561 - 2⁴¹ = 3156354905009 is a prime.

It is a super-2 number, since 2×5355378160561² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5355378160961) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 330918076 + ... + 330934258.

Almost surely, 2^{5355378160561} is an apocalyptic number.

5355378160561 is the 2314169-th square number.

5355378160561 is the 1157085-th centered octagonal number.

It is an amenable number.

5355378160561 is a deficient number, since it is larger than the sum of its proper divisors (1019144014586).

5355378160561 is an frugal number, since it uses more digits than its factorization.

5355378160561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32414 (or 16207 counting only the distinct ones).

The product of its (nonzero) digits is 11340000, while the sum is 55.

The spelling of 5355378160561 in words is "five trillion, three hundred fifty-five billion, three hundred seventy-eight million, one hundred sixty thousand, five hundred sixty-one".