9447765156 has 144 divisors (see below), whose sum is σ = 25503645440. Its totient is φ = 3056901120.

The previous prime is 9447765139. The next prime is 9447765161. The reversal of 9447765156 is 6515677449.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4683060 + ... + 4685076.

Almost surely, 2^9447765156 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 9447765156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12751822720).

9447765156 is an abundant number, since it is smaller than the sum of its proper divisors (16055880284).

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

9447765156 is a wasteful number, since it uses less digits than its factorization.

9447765156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2176 (or 2162 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 54.

The square root of 9447765156 is about 97199.6149992375. The cubic root of 9447765156 is about 2114.0229439052.

The spelling of 9447765156 in words is "nine billion, four hundred forty-seven million, seven hundred sixty-five thousand, one hundred fifty-six".