1523851663073 has 2 divisors, whose sum is σ = 1523851663074. Its totient is φ = 1523851663072.

The previous prime is 1523851662973. The next prime is 1523851663079. The reversal of 1523851663073 is 3703661583251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 888781333504 + 635070329569 = 942752^2 + 796913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1523851663073 - 2²² = 1523847468769 is a prime.

It is not a weakly prime, because it can be changed into another prime (1523851663079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761925831536 + 761925831537.

It is an arithmetic number, because the mean of its divisors is an integer number (761925831537).

Almost surely, 2^{1523851663073} is an apocalyptic number.

It is an amenable number.

1523851663073 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523851663073 is an equidigital number, since it uses as much as digits as its factorization.

1523851663073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 1523851663073 in words is "one trillion, five hundred twenty-three billion, eight hundred fifty-one million, six hundred sixty-three thousand, seventy-three".