52812937620 has 144 divisors (see below), whose sum is σ = 166414968720. Its totient is φ = 13541068800.

The previous prime is 52812937607. The next prime is 52812937747. The reversal of 52812937620 is 2673921825.

52812937620 is a `hidden beast` number, since 5 + 2 + 8 + 12 + 9 + 3 + 7 + 620 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 3152597904 + 49660339716 = 56148^2 + 222846^2 .

It is a super-2 number, since 2×52812937620² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1237030 + ... + 1279010.

It is an arithmetic number, because the mean of its divisors is an integer number (1155659505).

Almost surely, 2^52812937620 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 52812937620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83207484360).

52812937620 is an abundant number, since it is smaller than the sum of its proper divisors (113602031100).

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

52812937620 is a wasteful number, since it uses less digits than its factorization.

52812937620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42266 (or 42261 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 52812937620 in words is "fifty-two billion, eight hundred twelve million, nine hundred thirty-seven thousand, six hundred twenty".