51542334404069 has 2 divisors, whose sum is σ = 51542334404070. Its totient is φ = 51542334404068.

The previous prime is 51542334404021. The next prime is 51542334404131. The reversal of 51542334404069 is 96040443324515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43397303801569 + 8145030602500 = 6587663^2 + 2853950^2 .

It is a cyclic number.

It is not a de Polignac number, because 51542334404069 - 2¹⁶ = 51542334338533 is a prime.

It is a super-2 number, since 2×51542334404069² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51542334404009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25771167202034 + 25771167202035.

It is an arithmetic number, because the mean of its divisors is an integer number (25771167202035).

Almost surely, 2^{51542334404069} is an apocalyptic number.

It is an amenable number.

51542334404069 is a deficient number, since it is larger than the sum of its proper divisors (1).

51542334404069 is an equidigital number, since it uses as much as digits as its factorization.

51542334404069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 50.

The spelling of 51542334404069 in words is "fifty-one trillion, five hundred forty-two billion, three hundred thirty-four million, four hundred four thousand, sixty-nine".