21014030009977 has 2 divisors, whose sum is σ = 21014030009978. Its totient is φ = 21014030009976.

The previous prime is 21014030009953. The next prime is 21014030010041. The reversal of 21014030009977 is 77990003041012.

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., 14285043557136 + 6728986452841 = 3779556^2 + 2594029^2 .

It is a cyclic number.

It is not a de Polignac number, because 21014030009977 - 2²⁷ = 21013895792249 is a prime.

It is not a weakly prime, because it can be changed into another prime (21014030009927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10507015004988 + 10507015004989.

It is an arithmetic number, because the mean of its divisors is an integer number (10507015004989).

Almost surely, 2^{21014030009977} is an apocalyptic number.

It is an amenable number.

21014030009977 is a deficient number, since it is larger than the sum of its proper divisors (1).

21014030009977 is an equidigital number, since it uses as much as digits as its factorization.

21014030009977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 21014030009977 in words is "twenty-one trillion, fourteen billion, thirty million, nine thousand, nine hundred seventy-seven".