9815555152 has 60 divisors (see below), whose sum is σ = 20621400384. Its totient is φ = 4524024960.

The previous prime is 9815555143. The next prime is 9815555159. The reversal of 9815555152 is 2515555189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9815555159) 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, 2385577 + ... + 2389687.

Almost surely, 2^9815555152 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 9815555152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10310700192).

9815555152 is an abundant number, since it is smaller than the sum of its proper divisors (10805845232).

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

9815555152 is a wasteful number, since it uses less digits than its factorization.

9815555152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028 (or 5009 counting only the distinct ones).

The product of its digits is 450000, while the sum is 46.

The square root of 9815555152 is about 99073.4835967728. The cubic root of 9815555152 is about 2141.1065951187.

The spelling of 9815555152 in words is "nine billion, eight hundred fifteen million, five hundred fifty-five thousand, one hundred fifty-two".