8469735561 has 12 divisors (see below), whose sum is σ = 13981785792. Its totient is φ = 4839848856.

The previous prime is 8469735553. The next prime is 8469735569. The reversal of 8469735561 is 1655379648.

8469735561 is a `hidden beast` number, since 8 + 4 + 6 + 9 + 73 + 5 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (8469735553) and next prime (8469735569).

It is not a de Polignac number, because 8469735561 - 2³ = 8469735553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8469735498 and 8469735507.

It is not an unprimeable number, because it can be changed into a prime (8469735569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67220061 + ... + 67220186.

It is an arithmetic number, because the mean of its divisors is an integer number (1165148816).

Almost surely, 2^8469735561 is an apocalyptic number.

It is an amenable number.

8469735561 is a deficient number, since it is larger than the sum of its proper divisors (5512050231).

8469735561 is a wasteful number, since it uses less digits than its factorization.

8469735561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134440260 (or 134440257 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The square root of 8469735561 is about 92031.1662481792. The cubic root of 8469735561 is about 2038.4025332764.

The spelling of 8469735561 in words is "eight billion, four hundred sixty-nine million, seven hundred thirty-five thousand, five hundred sixty-one".