9669815541 has 6 divisors (see below), whose sum is σ = 13967511350. Its totient is φ = 6446543688.

The previous prime is 9669815539. The next prime is 9669815567. The reversal of 9669815541 is 1455189669.

9669815541 is a `hidden beast` number, since 9 + 6 + 6 + 9 + 81 + 554 + 1 = 666.

9669815541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9006959025 + 662856516 = 94905^2 + 25746^2 .

It is not a de Polignac number, because 9669815541 - 2¹ = 9669815539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9669815581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 537211966 + ... + 537211983.

Almost surely, 2^9669815541 is an apocalyptic number.

It is an amenable number.

9669815541 is a deficient number, since it is larger than the sum of its proper divisors (4297695809).

9669815541 is a wasteful number, since it uses less digits than its factorization.

9669815541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074423955 (or 1074423952 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 9669815541 is about 98335.2202468678. The cubic root of 9669815541 is about 2130.4567882325.

The spelling of 9669815541 in words is "nine billion, six hundred sixty-nine million, eight hundred fifteen thousand, five hundred forty-one".