51404815023841 has 2 divisors, whose sum is σ = 51404815023842. Its totient is φ = 51404815023840.

The previous prime is 51404815023823. The next prime is 51404815023889. The reversal of 51404815023841 is 14832051840415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28932522178816 + 22472292845025 = 5378896^2 + 4740495^2 .

It is a cyclic number.

It is not a de Polignac number, because 51404815023841 - 2¹¹ = 51404815021793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51404815023791 and 51404815023800.

It is not a weakly prime, because it can be changed into another prime (51404815023041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25702407511920 + 25702407511921.

It is an arithmetic number, because the mean of its divisors is an integer number (25702407511921).

Almost surely, 2^{51404815023841} is an apocalyptic number.

It is an amenable number.

51404815023841 is a deficient number, since it is larger than the sum of its proper divisors (1).

51404815023841 is an equidigital number, since it uses as much as digits as its factorization.

51404815023841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 51404815023841 in words is "fifty-one trillion, four hundred four billion, eight hundred fifteen million, twenty-three thousand, eight hundred forty-one".