19908776141 has 2 divisors, whose sum is σ = 19908776142. Its totient is φ = 19908776140.

The previous prime is 19908776131. The next prime is 19908776179. The reversal of 19908776141 is 14167780991.

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., 10085984041 + 9822792100 = 100429^2 + 99110^2 .

It is a cyclic number.

It is not a de Polignac number, because 19908776141 - 2⁶ = 19908776077 is a prime.

It is a super-3 number, since 3×19908776141³ (a number of 32 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19908776131) 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, 9954388070 + 9954388071.

It is an arithmetic number, because the mean of its divisors is an integer number (9954388071).

Almost surely, 2^19908776141 is an apocalyptic number.

It is an amenable number.

19908776141 is a deficient number, since it is larger than the sum of its proper divisors (1).

19908776141 is an equidigital number, since it uses as much as digits as its factorization.

19908776141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 53.

The spelling of 19908776141 in words is "nineteen billion, nine hundred eight million, seven hundred seventy-six thousand, one hundred forty-one".