8770155020 has 144 divisors (see below), whose sum is σ = 20906744544. Its totient is φ = 3086054400.

The previous prime is 8770154989. The next prime is 8770155067. The reversal of 8770155020 is 205510778.

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, 15577259 + ... + 15577821.

It is an arithmetic number, because the mean of its divisors is an integer number (145185726).

Almost surely, 2^8770155020 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 8770155020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10453372272).

8770155020 is an abundant number, since it is smaller than the sum of its proper divisors (12136589524).

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

8770155020 is a wasteful number, since it uses less digits than its factorization.

8770155020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 8770155020 is about 93649.1058152719. The cubic root of 8770155020 is about 2062.2236192622.

Adding to 8770155020 its reverse (205510778), we get a palindrome (8975665798).

It can be divided in two parts, 87 and 70155020, that added together give a palindrome (70155107).

The spelling of 8770155020 in words is "eight billion, seven hundred seventy million, one hundred fifty-five thousand, twenty".