14421877777 has 2 divisors, whose sum is σ = 14421877778. Its totient is φ = 14421877776.

The previous prime is 14421877739. The next prime is 14421877807. The reversal of 14421877777 is 77777812441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14218416081 + 203461696 = 119241^2 + 14264^2 .

It is a cyclic number.

It is not a de Polignac number, because 14421877777 - 2³¹ = 12274394129 is a prime.

It is a super-2 number, since 2×14421877777² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (14431877777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7210938888 + 7210938889.

It is an arithmetic number, because the mean of its divisors is an integer number (7210938889).

Almost surely, 2^14421877777 is an apocalyptic number.

It is an amenable number.

14421877777 is a deficient number, since it is larger than the sum of its proper divisors (1).

14421877777 is an equidigital number, since it uses as much as digits as its factorization.

14421877777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4302592, while the sum is 55.

The spelling of 14421877777 in words is "fourteen billion, four hundred twenty-one million, eight hundred seventy-seven thousand, seven hundred seventy-seven".