27526359809816 has 128 divisors (see below), whose sum is σ = 62302324224000. Its totient is φ = 11137860381312.

The previous prime is 27526359809687. The next prime is 27526359809831. The reversal of 27526359809816 is 61890895362572.

It is a self number, because there is not a number n which added to its sum of digits gives 27526359809816.

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, 525416375 + ... + 525468761.

It is an arithmetic number, because the mean of its divisors is an integer number (486736908000).

Almost surely, 2^{27526359809816} 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 27526359809816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31151162112000).

27526359809816 is an abundant number, since it is smaller than the sum of its proper divisors (34775964414184).

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

27526359809816 is a wasteful number, since it uses less digits than its factorization.

27526359809816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54101 (or 54097 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 71.

The spelling of 27526359809816 in words is "twenty-seven trillion, five hundred twenty-six billion, three hundred fifty-nine million, eight hundred nine thousand, eight hundred sixteen".