52012664550 has 432 divisors, whose sum is σ = 181493687232. Its totient is φ = 10554364800.

The previous prime is 52012664533. The next prime is 52012664563. The reversal of 52012664550 is 5546621025.

52012664550 is a `hidden beast` number, since 5 + 2 + 0 + 1 + 2 + 6 + 645 + 5 + 0 = 666.

It is a Curzon number.

It is a congruent number.

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, 10427157 + ... + 10432143.

It is an arithmetic number, because the mean of its divisors is an integer number (420124276).

Almost surely, 2^52012664550 is an apocalyptic number.

52012664550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 52012664550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90746843616).

52012664550 is an abundant number, since it is smaller than the sum of its proper divisors (129481022682).

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

52012664550 is a wasteful number, since it uses less digits than its factorization.

52012664550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5073 (or 5058 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 52012664550 in words is "fifty-two billion, twelve million, six hundred sixty-four thousand, five hundred fifty".