51573536428049 has 2 divisors, whose sum is σ = 51573536428050. Its totient is φ = 51573536428048.

The previous prime is 51573536428039. The next prime is 51573536428061. The reversal of 51573536428049 is 94082463537515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37805036016400 + 13768500411649 = 6148580^2 + 3710593^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51573536428049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51573536427982 and 51573536428000.

It is not a weakly prime, because it can be changed into another prime (51573536428039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25786768214024 + 25786768214025.

It is an arithmetic number, because the mean of its divisors is an integer number (25786768214025).

It is a 2-persistent number, because it is pandigital, and so is 2⋅51573536428049 = 103147072856098, but 3⋅51573536428049 = 154720609284147 is not.

Almost surely, 2^{51573536428049} is an apocalyptic number.

It is an amenable number.

51573536428049 is a deficient number, since it is larger than the sum of its proper divisors (1).

51573536428049 is an equidigital number, since it uses as much as digits as its factorization.

51573536428049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864000, while the sum is 62.

The spelling of 51573536428049 in words is "fifty-one trillion, five hundred seventy-three billion, five hundred thirty-six million, four hundred twenty-eight thousand, forty-nine".