11903388481 has 2 divisors, whose sum is σ = 11903388482. Its totient is φ = 11903388480.

The previous prime is 11903388479. The next prime is 11903388503. The reversal of 11903388481 is 18488330911.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7143630400 + 4759758081 = 84520^2 + 68991^2 .

It is a cyclic number.

It is not a de Polignac number, because 11903388481 - 2¹ = 11903388479 is a prime.

It is a super-2 number, since 2×11903388481² (a number of 21 digits) contains 22 as substring.

Together with 11903388479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11903388461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5951694240 + 5951694241.

It is an arithmetic number, because the mean of its divisors is an integer number (5951694241).

Almost surely, 2^11903388481 is an apocalyptic number.

It is an amenable number.

11903388481 is a deficient number, since it is larger than the sum of its proper divisors (1).

11903388481 is an equidigital number, since it uses as much as digits as its factorization.

11903388481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 46.

The spelling of 11903388481 in words is "eleven billion, nine hundred three million, three hundred eighty-eight thousand, four hundred eighty-one".