947780520912 has 160 divisors (see below), whose sum is σ = 2821849747200. Its totient is φ = 304213529088.

The previous prime is 947780520881. The next prime is 947780520917. The reversal of 947780520912 is 219025087749.

947780520912 is a `hidden beast` number, since 9 + 47 + 78 + 0 + 520 + 9 + 1 + 2 = 666.

947780520912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947780520917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4571533 + ... + 4774355.

It is an arithmetic number, because the mean of its divisors is an integer number (17636560920).

Almost surely, 2^947780520912 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 947780520912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1410924873600).

947780520912 is an abundant number, since it is smaller than the sum of its proper divisors (1874069226288).

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

947780520912 is a wasteful number, since it uses less digits than its factorization.

947780520912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203242 (or 203230 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 947780520912 in words is "nine hundred forty-seven billion, seven hundred eighty million, five hundred twenty thousand, nine hundred twelve".