51444152038061 has 2 divisors, whose sum is σ = 51444152038062. Its totient is φ = 51444152038060.

The previous prime is 51444152038043. The next prime is 51444152038093. The reversal of 51444152038061 is 16083025144415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37789604655625 + 13654547382436 = 6147325^2 + 3695206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51444152038061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51444152038021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25722076019030 + 25722076019031.

It is an arithmetic number, because the mean of its divisors is an integer number (25722076019031).

Almost surely, 2^{51444152038061} is an apocalyptic number.

It is an amenable number.

51444152038061 is a deficient number, since it is larger than the sum of its proper divisors (1).

51444152038061 is an equidigital number, since it uses as much as digits as its factorization.

51444152038061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 44.

The spelling of 51444152038061 in words is "fifty-one trillion, four hundred forty-four billion, one hundred fifty-two million, thirty-eight thousand, sixty-one".