52726979235840 has 1664 divisors, whose sum is σ = 217357260890112. Its totient is φ = 10607206072320.

The previous prime is 52726979235829. The next prime is 52726979235899. The reversal of 52726979235840 is 4853297962725.

It is a tau number, because it is divible by the number of its divisors (1664).

It is a Harshad number since it is a multiple of its sum of digits (69).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 66997431927 + ... + 66997432713.

Almost surely, 2^{52726979235840} 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 52726979235840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108678630445056).

52726979235840 is an abundant number, since it is smaller than the sum of its proper divisors (164630281654272).

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

52726979235840 is a wasteful number, since it uses less digits than its factorization.

52726979235840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 457228800, while the sum is 69.

The spelling of 52726979235840 in words is "fifty-two trillion, seven hundred twenty-six billion, nine hundred seventy-nine million, two hundred thirty-five thousand, eight hundred forty".