13552019981 has 2 divisors, whose sum is σ = 13552019982. Its totient is φ = 13552019980.

The previous prime is 13552019977. The next prime is 13552020017. The reversal of 13552019981 is 18991025531.

13552019981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12068999881 + 1483020100 = 109859^2 + 38510^2 .

It is a cyclic number.

It is not a de Polignac number, because 13552019981 - 2² = 13552019977 is a prime.

It is a super-2 number, since 2×13552019981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13552019941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6776009990 + 6776009991.

It is an arithmetic number, because the mean of its divisors is an integer number (6776009991).

Almost surely, 2^13552019981 is an apocalyptic number.

It is an amenable number.

13552019981 is a deficient number, since it is larger than the sum of its proper divisors (1).

13552019981 is an equidigital number, since it uses as much as digits as its factorization.

13552019981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 44.

The spelling of 13552019981 in words is "thirteen billion, five hundred fifty-two million, nineteen thousand, nine hundred eighty-one".