9561351520 has 48 divisors (see below), whose sum is σ = 25815652128. Its totient is φ = 3278177280.

The previous prime is 9561351493. The next prime is 9561351529. The reversal of 9561351520 is 251531659.

It is a self number, because there is not a number n which added to its sum of digits gives 9561351520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9561351529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4267341 + ... + 4269580.

It is an arithmetic number, because the mean of its divisors is an integer number (537826086).

Almost surely, 2^9561351520 is an apocalyptic number.

It is an amenable number.

9561351520 is an abundant number, since it is smaller than the sum of its proper divisors (16254300608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9561351520 is a wasteful number, since it uses less digits than its factorization.

9561351520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536943 (or 8536935 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 9561351520 is about 97782.1636087073. The cubic root of 9561351520 is about 2122.4612094355.

The spelling of 9561351520 in words is "nine billion, five hundred sixty-one million, three hundred fifty-one thousand, five hundred twenty".