51203856433 has 2 divisors, whose sum is σ = 51203856434. Its totient is φ = 51203856432.

The previous prime is 51203856413. The next prime is 51203856461. The reversal of 51203856433 is 33465830215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41782630464 + 9421225969 = 204408^2 + 97063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51203856433 is a prime.

It is a super-2 number, since 2×51203856433² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51203856413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25601928216 + 25601928217.

It is an arithmetic number, because the mean of its divisors is an integer number (25601928217).

Almost surely, 2^51203856433 is an apocalyptic number.

It is an amenable number.

51203856433 is a deficient number, since it is larger than the sum of its proper divisors (1).

51203856433 is an equidigital number, since it uses as much as digits as its factorization.

51203856433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 51203856433 in words is "fifty-one billion, two hundred three million, eight hundred fifty-six thousand, four hundred thirty-three".