9605551872 has 144 divisors (see below), whose sum is σ = 30159890432. Its totient is φ = 2655866880.

The previous prime is 9605551867. The next prime is 9605551877. The reversal of 9605551872 is 2781555069.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9605551867) and next prime (9605551877).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9605551877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137838 + ... + 195474.

Almost surely, 2^9605551872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9605551872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15079945216).

9605551872 is an abundant number, since it is smaller than the sum of its proper divisors (20554338560).

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

9605551872 is a wasteful number, since it uses less digits than its factorization.

9605551872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57694 (or 57680 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 48.

The square root of 9605551872 is about 98007.9173944636. The cubic root of 9605551872 is about 2125.7267638796.

The spelling of 9605551872 in words is "nine billion, six hundred five million, five hundred fifty-one thousand, eight hundred seventy-two".