100803553381 has 2 divisors, whose sum is σ = 100803553382. Its totient is φ = 100803553380.

The previous prime is 100803553343. The next prime is 100803553391. The reversal of 100803553381 is 183355308001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59519409156 + 41284144225 = 243966^2 + 203185^2 .

It is a cyclic number.

It is not a de Polignac number, because 100803553381 - 2¹³ = 100803545189 is a prime.

It is a super-2 number, since 2×100803553381² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100803553381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100803553391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50401776690 + 50401776691.

It is an arithmetic number, because the mean of its divisors is an integer number (50401776691).

Almost surely, 2^100803553381 is an apocalyptic number.

It is an amenable number.

100803553381 is a deficient number, since it is larger than the sum of its proper divisors (1).

100803553381 is an equidigital number, since it uses as much as digits as its factorization.

100803553381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 100803553381 in words is "one hundred billion, eight hundred three million, five hundred fifty-three thousand, three hundred eighty-one".