52636251420 has 144 divisors (see below), whose sum is σ = 162026504640. Its totient is φ = 13829004288.

The previous prime is 52636251419. The next prime is 52636251443. The reversal of 52636251420 is 2415263625.

52636251420 is a `hidden beast` number, since 5 + 2 + 6 + 3 + 625 + 1 + 4 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 17330142 + ... + 17333178.

It is an arithmetic number, because the mean of its divisors is an integer number (1125184060).

Almost surely, 2^52636251420 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 52636251420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81013252320).

52636251420 is an abundant number, since it is smaller than the sum of its proper divisors (109390253220).

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

52636251420 is a wasteful number, since it uses less digits than its factorization.

52636251420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4444 (or 4439 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 52636251420 in words is "fifty-two billion, six hundred thirty-six million, two hundred fifty-one thousand, four hundred twenty".