51333355636 has 6 divisors (see below), whose sum is σ = 89833372370. Its totient is φ = 25666677816.

The previous prime is 51333355631. The next prime is 51333355651. The reversal of 51333355636 is 63655333315.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 34976480400 + 16356875236 = 187020^2 + 127894^2 .

It is a super-2 number, since 2×51333355636² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51333355592 and 51333355601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51333355631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6416669451 + ... + 6416669458.

Almost surely, 2^51333355636 is an apocalyptic number.

It is an amenable number.

51333355636 is a deficient number, since it is larger than the sum of its proper divisors (38500016734).

51333355636 is a wasteful number, since it uses less digits than its factorization.

51333355636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12833338913 (or 12833338911 counting only the distinct ones).

The product of its digits is 1093500, while the sum is 43.

The spelling of 51333355636 in words is "fifty-one billion, three hundred thirty-three million, three hundred fifty-five thousand, six hundred thirty-six".