52867537920 has 352 divisors, whose sum is σ = 190036929600. Its totient is φ = 13936361472.

The previous prime is 52867537909. The next prime is 52867537937. The reversal of 52867537920 is 2973576825.

52867537920 is a `hidden beast` number, since 5 + 2 + 86 + 7 + 537 + 9 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12301212 + ... + 12305508.

Almost surely, 2^52867537920 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 52867537920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95018464800).

52867537920 is an abundant number, since it is smaller than the sum of its proper divisors (137169391680).

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

52867537920 is a wasteful number, since it uses less digits than its factorization.

52867537920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420 (or 4396 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 52867537920 in words is "fifty-two billion, eight hundred sixty-seven million, five hundred thirty-seven thousand, nine hundred twenty".