9564471261 has 48 divisors (see below), whose sum is σ = 14465138688. Its totient is φ = 6082970400.

The previous prime is 9564471233. The next prime is 9564471311. The reversal of 9564471261 is 1621744659.

It is not a de Polignac number, because 9564471261 - 2¹⁴ = 9564454877 is a prime.

It is a super-2 number, since 2×9564471261² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9564470261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6102900 + ... + 6104466.

It is an arithmetic number, because the mean of its divisors is an integer number (301357056).

Almost surely, 2^9564471261 is an apocalyptic number.

It is an amenable number.

9564471261 is a deficient number, since it is larger than the sum of its proper divisors (4900667427).

9564471261 is a wasteful number, since it uses less digits than its factorization.

9564471261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1899 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 9564471261 is about 97798.1148131190. The cubic root of 9564471261 is about 2122.6920278925.

The spelling of 9564471261 in words is "nine billion, five hundred sixty-four million, four hundred seventy-one thousand, two hundred sixty-one".