52665782400 has 1728 divisors, whose sum is σ = 251923875840. Its totient is φ = 10218700800.

The previous prime is 52665782399. The next prime is 52665782437. The reversal of 52665782400 is 428756625.

52665782400 is a `hidden beast` number, since 52 + 6 + 6 + 578 + 24 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 414691137 + ... + 414691263.

It is an arithmetic number, because the mean of its divisors is an integer number (145789280).

Almost surely, 2^52665782400 is an apocalyptic number.

52665782400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52665782400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125961937920).

52665782400 is an abundant number, since it is smaller than the sum of its proper divisors (199258093440).

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

52665782400 is a wasteful number, since it uses less digits than its factorization.

52665782400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 52665782400 in words is "fifty-two billion, six hundred sixty-five million, seven hundred eighty-two thousand, four hundred".