14021507977 has 2 divisors, whose sum is σ = 14021507978. Its totient is φ = 14021507976.

The previous prime is 14021507921. The next prime is 14021507993. The reversal of 14021507977 is 77970512041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9943280656 + 4078227321 = 99716^2 + 63861^2 .

It is a cyclic number.

It is not a de Polignac number, because 14021507977 - 2³¹ = 11874024329 is a prime.

It is not a weakly prime, because it can be changed into another prime (14021507677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7010753988 + 7010753989.

It is an arithmetic number, because the mean of its divisors is an integer number (7010753989).

Almost surely, 2^14021507977 is an apocalyptic number.

It is an amenable number.

14021507977 is a deficient number, since it is larger than the sum of its proper divisors (1).

14021507977 is an equidigital number, since it uses as much as digits as its factorization.

14021507977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 43.

The spelling of 14021507977 in words is "fourteen billion, twenty-one million, five hundred seven thousand, nine hundred seventy-seven".