51223303120 has 40 divisors (see below), whose sum is σ = 129920925600. Its totient is φ = 18626655360.

The previous prime is 51223303091. The next prime is 51223303121. The reversal of 51223303120 is 2130332215.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 51223303091 and 51223303100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51223303121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29103270 + ... + 29105029.

It is an arithmetic number, because the mean of its divisors is an integer number (3248023140).

Almost surely, 2^51223303120 is an apocalyptic number.

It is an amenable number.

51223303120 is an abundant number, since it is smaller than the sum of its proper divisors (78697622480).

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

51223303120 is a wasteful number, since it uses less digits than its factorization.

51223303120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58208323 (or 58208317 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 51223303120 its reverse (2130332215), we get a palindrome (53353635335).

The spelling of 51223303120 in words is "fifty-one billion, two hundred twenty-three million, three hundred three thousand, one hundred twenty".