51022401204 has 12 divisors (see below), whose sum is σ = 119052269504. Its totient is φ = 17007467064.

The previous prime is 51022401193. The next prime is 51022401271. The reversal of 51022401204 is 40210422015.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2125933372 + ... + 2125933395.

Almost surely, 2^51022401204 is an apocalyptic number.

It is an amenable number.

51022401204 is an abundant number, since it is smaller than the sum of its proper divisors (68029868300).

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

51022401204 is a wasteful number, since it uses less digits than its factorization.

51022401204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4251866774 (or 4251866772 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 51022401204 its reverse (40210422015), we get a palindrome (91232823219).

The spelling of 51022401204 in words is "fifty-one billion, twenty-two million, four hundred one thousand, two hundred four".