51233220650 has 24 divisors (see below), whose sum is σ = 95360146560. Its totient is φ = 20479018160.

The previous prime is 51233220641. The next prime is 51233220679. The reversal of 51233220650 is 5602233215.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284084 + ... + 427983.

It is an arithmetic number, because the mean of its divisors is an integer number (3973339440).

Almost surely, 2^51233220650 is an apocalyptic number.

51233220650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51233220650 is a deficient number, since it is larger than the sum of its proper divisors (44126925910).

51233220650 is a wasteful number, since it uses less digits than its factorization.

51233220650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713518 (or 713513 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 51233220650 its reverse (5602233215), we get a palindrome (56835453865).

The spelling of 51233220650 in words is "fifty-one billion, two hundred thirty-three million, two hundred twenty thousand, six hundred fifty".