3855505516903 has 2 divisors, whose sum is σ = 3855505516904. Its totient is φ = 3855505516902.

The previous prime is 3855505516897. The next prime is 3855505516921. The reversal of 3855505516903 is 3096155055583.

It is a weak prime.

It is an emirp because it is prime and its reverse (3096155055583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3855505516903 - 2¹³ = 3855505508711 is a prime.

It is a super-2 number, since 2×3855505516903² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3855505516003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1927752758451 + 1927752758452.

It is an arithmetic number, because the mean of its divisors is an integer number (1927752758452).

Almost surely, 2^{3855505516903} is an apocalyptic number.

3855505516903 is a deficient number, since it is larger than the sum of its proper divisors (1).

3855505516903 is an equidigital number, since it uses as much as digits as its factorization.

3855505516903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12150000, while the sum is 55.

The spelling of 3855505516903 in words is "three trillion, eight hundred fifty-five billion, five hundred five million, five hundred sixteen thousand, nine hundred three".