8745947136 has 364 divisors, whose sum is σ = 27395454780. Its totient is φ = 2786918400.

The previous prime is 8745947129. The next prime is 8745947149. The reversal of 8745947136 is 6317495478.

It can be written as a sum of positive squares in 2 ways, for example, as 6879707136 + 1866240000 = 82944^2 + 43200^2 .

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

Its product of digits (5080320) is a multiple of the sum of its prime divisors (135).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 86593486 + ... + 86593586.

Almost surely, 2^8745947136 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 8745947136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13697727390).

8745947136 is an abundant number, since it is smaller than the sum of its proper divisors (18649507644).

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

8745947136 is an equidigital number, since it uses as much as digits as its factorization.

8745947136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 135 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 8745947136 is about 93519.7686909030. The cubic root of 8745947136 is about 2060.3244482215.

The spelling of 8745947136 in words is "eight billion, seven hundred forty-five million, nine hundred forty-seven thousand, one hundred thirty-six".