73781263903 has 2 divisors, whose sum is σ = 73781263904. Its totient is φ = 73781263902.

The previous prime is 73781263891. The next prime is 73781263957. The reversal of 73781263903 is 30936218737.

It is a weak prime.

It is an emirp because it is prime and its reverse (30936218737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73781263903 - 2¹³ = 73781255711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73781263973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36890631951 + 36890631952.

It is an arithmetic number, because the mean of its divisors is an integer number (36890631952).

Almost surely, 2^73781263903 is an apocalyptic number.

73781263903 is a deficient number, since it is larger than the sum of its proper divisors (1).

73781263903 is an equidigital number, since it uses as much as digits as its factorization.

73781263903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 73781263903 in words is "seventy-three billion, seven hundred eighty-one million, two hundred sixty-three thousand, nine hundred three".