52947378540 has 240 divisors, whose sum is σ = 190664443200. Its totient is φ = 12048818688.

The previous prime is 52947378521. The next prime is 52947378581. The reversal of 52947378540 is 4587374925.

It is a happy number.

52947378540 is a `hidden beast` number, since 5 + 2 + 94 + 7 + 3 + 7 + 8 + 540 = 666.

52947378540 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 an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2586666 + ... + 2607054.

It is an arithmetic number, because the mean of its divisors is an integer number (794435180).

Almost surely, 2^52947378540 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 52947378540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95332221600).

52947378540 is an abundant number, since it is smaller than the sum of its proper divisors (137717064660).

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

52947378540 is a wasteful number, since it uses less digits than its factorization.

52947378540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20646 (or 20635 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 52947378540 in words is "fifty-two billion, nine hundred forty-seven million, three hundred seventy-eight thousand, five hundred forty".