103306644521 has 2 divisors, whose sum is σ = 103306644522. Its totient is φ = 103306644520.

The previous prime is 103306644503. The next prime is 103306644593. The reversal of 103306644521 is 125446603301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101847786496 + 1458858025 = 319136^2 + 38195^2 .

It is an emirp because it is prime and its reverse (125446603301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103306644521 is a prime.

It is not a weakly prime, because it can be changed into another prime (103306644421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51653322260 + 51653322261.

It is an arithmetic number, because the mean of its divisors is an integer number (51653322261).

Almost surely, 2^103306644521 is an apocalyptic number.

It is an amenable number.

103306644521 is a deficient number, since it is larger than the sum of its proper divisors (1).

103306644521 is an equidigital number, since it uses as much as digits as its factorization.

103306644521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 103306644521 in words is "one hundred three billion, three hundred six million, six hundred forty-four thousand, five hundred twenty-one".