53726561280 has 1056 divisors, whose sum is σ = 228897177600. Its totient is φ = 11824496640.

The previous prime is 53726561279. The next prime is 53726561299. The reversal of 53726561280 is 8216562735.

53726561280 is a `hidden beast` number, since 5 + 3 + 7 + 2 + 6 + 561 + 2 + 80 = 666.

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 polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 269982621 + ... + 269982819.

Almost surely, 2^53726561280 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 53726561280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114448588800).

53726561280 is an abundant number, since it is smaller than the sum of its proper divisors (175170616320).

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

53726561280 is a wasteful number, since it uses less digits than its factorization.

53726561280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 53726561280 in words is "fifty-three billion, seven hundred twenty-six million, five hundred sixty-one thousand, two hundred eighty".