52947378520 has 32 divisors (see below), whose sum is σ = 119200500720. Its totient is φ = 21166702720.

The previous prime is 52947378487. The next prime is 52947378521. The reversal of 52947378520 is 2587374925.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52947378521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312586 + ... + 451225.

Almost surely, 2^52947378520 is an apocalyptic number.

It is an amenable number.

52947378520 is an abundant number, since it is smaller than the sum of its proper divisors (66253122200).

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

52947378520 is a wasteful number, since it uses less digits than its factorization.

52947378520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765555 (or 765551 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 52.

The spelling of 52947378520 in words is "fifty-two billion, nine hundred forty-seven million, three hundred seventy-eight thousand, five hundred twenty".