59101985881 has 3 divisors (see below), whose sum is σ = 59102228991. Its totient is φ = 59101742772.

The previous prime is 59101985879. The next prime is 59101985923. The reversal of 59101985881 is 18858910195.

The square root of 59101985881 is 243109.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 12782337481 + 46319648400 = 113059^2 + 215220^2 .

It is not a de Polignac number, because 59101985881 - 2¹ = 59101985879 is a prime.

It is a super-2 number, since 2×59101985881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (59101985281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 121555 + ... + 364663.

It is an arithmetic number, because the mean of its divisors is an integer number (19700742997).

Almost surely, 2^59101985881 is an apocalyptic number.

59101985881 is the 243109-th square number.

59101985881 is the 121555-th centered octagonal number.

It is an amenable number.

59101985881 is a deficient number, since it is larger than the sum of its proper divisors (243110).

59101985881 is an frugal number, since it uses more digits than its factorization.

59101985881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486218 (or 243109 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 55.

The spelling of 59101985881 in words is "fifty-nine billion, one hundred one million, nine hundred eighty-five thousand, eight hundred eighty-one".