51474536221011 has 16 divisors (see below), whose sum is σ = 71619260154624. Its totient is φ = 32823189638624.

The previous prime is 51474536221007. The next prime is 51474536221093. The reversal of 51474536221011 is 11012263547415.

It is a happy number.

51474536221011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51474536221011 - 2² = 51474536221007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51474536221711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11112381 + ... + 15047726.

It is an arithmetic number, because the mean of its divisors is an integer number (4476203759664).

Almost surely, 2^{51474536221011} is an apocalyptic number.

51474536221011 is a deficient number, since it is larger than the sum of its proper divisors (20144723933613).

51474536221011 is a wasteful number, since it uses less digits than its factorization.

51474536221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26188650.

The product of its (nonzero) digits is 201600, while the sum is 42.

Adding to 51474536221011 its reverse (11012263547415), we get a palindrome (62486799768426).

The spelling of 51474536221011 in words is "fifty-one trillion, four hundred seventy-four billion, five hundred thirty-six million, two hundred twenty-one thousand, eleven".