103503553261 has 2 divisors, whose sum is σ = 103503553262. Its totient is φ = 103503553260.

The previous prime is 103503553259. The next prime is 103503553273. The reversal of 103503553261 is 162355305301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92239764100 + 11263789161 = 303710^2 + 106131^2 .

It is a cyclic number.

It is not a de Polignac number, because 103503553261 - 2¹ = 103503553259 is a prime.

Together with 103503553259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103503553061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51751776630 + 51751776631.

It is an arithmetic number, because the mean of its divisors is an integer number (51751776631).

Almost surely, 2^103503553261 is an apocalyptic number.

It is an amenable number.

103503553261 is a deficient number, since it is larger than the sum of its proper divisors (1).

103503553261 is an equidigital number, since it uses as much as digits as its factorization.

103503553261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 34.

Adding to 103503553261 its reverse (162355305301), we get a palindrome (265858858562).

The spelling of 103503553261 in words is "one hundred three billion, five hundred three million, five hundred fifty-three thousand, two hundred sixty-one".