20141881261 has 2 divisors, whose sum is σ = 20141881262. Its totient is φ = 20141881260.

The previous prime is 20141881259. The next prime is 20141881271. The reversal of 20141881261 is 16218814102.

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., 17184588100 + 2957293161 = 131090^2 + 54381^2 .

It is a cyclic number.

It is not a de Polignac number, because 20141881261 - 2¹ = 20141881259 is a prime.

Together with 20141881259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20141881271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10070940630 + 10070940631.

It is an arithmetic number, because the mean of its divisors is an integer number (10070940631).

Almost surely, 2^20141881261 is an apocalyptic number.

It is an amenable number.

20141881261 is a deficient number, since it is larger than the sum of its proper divisors (1).

20141881261 is an equidigital number, since it uses as much as digits as its factorization.

20141881261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 34.

The spelling of 20141881261 in words is "twenty billion, one hundred forty-one million, eight hundred eighty-one thousand, two hundred sixty-one".